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2584 lines
98 KiB
Python
Executable File
2584 lines
98 KiB
Python
Executable File
#!/usr/bin/env python3
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"""Generate Python documentation in HTML or text for interactive use.
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In the Python interpreter, do "from pydoc import help" to provide online
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help. Calling help(thing) on a Python object documents the object.
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Or, at the shell command line outside of Python:
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Run "pydoc <name>" to show documentation on something. <name> may be
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the name of a function, module, package, or a dotted reference to a
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class or function within a module or module in a package. If the
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argument contains a path segment delimiter (e.g. slash on Unix,
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backslash on Windows) it is treated as the path to a Python source file.
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Run "pydoc -k <keyword>" to search for a keyword in the synopsis lines
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of all available modules.
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Run "pydoc -p <port>" to start an HTTP server on the given port on the
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local machine. Port number 0 can be used to get an arbitrary unused port.
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Run "pydoc -b" to start an HTTP server on an arbitrary unused port and
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open a Web browser to interactively browse documentation. The -p option
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can be used with the -b option to explicitly specify the server port.
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Run "pydoc -w <name>" to write out the HTML documentation for a module
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to a file named "<name>.html".
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Module docs for core modules are assumed to be in
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http://docs.python.org/X.Y/library/
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This can be overridden by setting the PYTHONDOCS environment variable
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to a different URL or to a local directory containing the Library
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Reference Manual pages.
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"""
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__all__ = ['help']
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__author__ = "Ka-Ping Yee <ping@lfw.org>"
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__date__ = "26 February 2001"
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__credits__ = """Guido van Rossum, for an excellent programming language.
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Tommy Burnette, the original creator of manpy.
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Paul Prescod, for all his work on onlinehelp.
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Richard Chamberlain, for the first implementation of textdoc.
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"""
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# Known bugs that can't be fixed here:
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# - imp.load_module() cannot be prevented from clobbering existing
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# loaded modules, so calling synopsis() on a binary module file
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# changes the contents of any existing module with the same name.
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# - If the __file__ attribute on a module is a relative path and
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# the current directory is changed with os.chdir(), an incorrect
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# path will be displayed.
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import builtins
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import imp
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import inspect
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import io
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import os
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import pkgutil
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import platform
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import re
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import sys
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import time
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import tokenize
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import warnings
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from collections import deque
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from reprlib import Repr
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from traceback import extract_tb, format_exception_only
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# --------------------------------------------------------- common routines
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def pathdirs():
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"""Convert sys.path into a list of absolute, existing, unique paths."""
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dirs = []
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normdirs = []
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for dir in sys.path:
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dir = os.path.abspath(dir or '.')
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normdir = os.path.normcase(dir)
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if normdir not in normdirs and os.path.isdir(dir):
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dirs.append(dir)
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normdirs.append(normdir)
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return dirs
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def getdoc(object):
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"""Get the doc string or comments for an object."""
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result = inspect.getdoc(object) or inspect.getcomments(object)
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return result and re.sub('^ *\n', '', result.rstrip()) or ''
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def splitdoc(doc):
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"""Split a doc string into a synopsis line (if any) and the rest."""
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lines = doc.strip().split('\n')
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if len(lines) == 1:
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return lines[0], ''
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elif len(lines) >= 2 and not lines[1].rstrip():
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return lines[0], '\n'.join(lines[2:])
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return '', '\n'.join(lines)
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def classname(object, modname):
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"""Get a class name and qualify it with a module name if necessary."""
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name = object.__name__
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if object.__module__ != modname:
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name = object.__module__ + '.' + name
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return name
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def isdata(object):
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"""Check if an object is of a type that probably means it's data."""
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return not (inspect.ismodule(object) or inspect.isclass(object) or
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inspect.isroutine(object) or inspect.isframe(object) or
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inspect.istraceback(object) or inspect.iscode(object))
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def replace(text, *pairs):
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"""Do a series of global replacements on a string."""
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while pairs:
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text = pairs[1].join(text.split(pairs[0]))
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pairs = pairs[2:]
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return text
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def cram(text, maxlen):
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"""Omit part of a string if needed to make it fit in a maximum length."""
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if len(text) > maxlen:
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pre = max(0, (maxlen-3)//2)
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post = max(0, maxlen-3-pre)
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return text[:pre] + '...' + text[len(text)-post:]
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return text
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_re_stripid = re.compile(r' at 0x[0-9a-f]{6,16}(>+)$', re.IGNORECASE)
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def stripid(text):
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"""Remove the hexadecimal id from a Python object representation."""
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# The behaviour of %p is implementation-dependent in terms of case.
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return _re_stripid.sub(r'\1', text)
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def _is_some_method(obj):
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return inspect.ismethod(obj) or inspect.ismethoddescriptor(obj)
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def allmethods(cl):
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methods = {}
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for key, value in inspect.getmembers(cl, _is_some_method):
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methods[key] = 1
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for base in cl.__bases__:
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methods.update(allmethods(base)) # all your base are belong to us
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for key in methods.keys():
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methods[key] = getattr(cl, key)
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return methods
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def _split_list(s, predicate):
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"""Split sequence s via predicate, and return pair ([true], [false]).
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The return value is a 2-tuple of lists,
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([x for x in s if predicate(x)],
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[x for x in s if not predicate(x)])
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"""
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yes = []
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no = []
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for x in s:
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if predicate(x):
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yes.append(x)
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else:
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no.append(x)
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return yes, no
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def visiblename(name, all=None, obj=None):
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"""Decide whether to show documentation on a variable."""
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# Certain special names are redundant.
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if name in {'__builtins__', '__doc__', '__file__', '__path__',
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'__module__', '__name__', '__slots__', '__package__',
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'__cached__', '__author__', '__credits__', '__date__',
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'__version__'}:
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return 0
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# Private names are hidden, but special names are displayed.
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if name.startswith('__') and name.endswith('__'): return 1
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# Namedtuples have public fields and methods with a single leading underscore
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if name.startswith('_') and hasattr(obj, '_fields'):
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return True
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if all is not None:
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# only document that which the programmer exported in __all__
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return name in all
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else:
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return not name.startswith('_')
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def classify_class_attrs(object):
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"""Wrap inspect.classify_class_attrs, with fixup for data descriptors."""
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results = []
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for (name, kind, cls, value) in inspect.classify_class_attrs(object):
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if inspect.isdatadescriptor(value):
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kind = 'data descriptor'
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results.append((name, kind, cls, value))
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return results
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# ----------------------------------------------------- module manipulation
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def ispackage(path):
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"""Guess whether a path refers to a package directory."""
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if os.path.isdir(path):
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for ext in ('.py', '.pyc', '.pyo'):
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if os.path.isfile(os.path.join(path, '__init__' + ext)):
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return True
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return False
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def source_synopsis(file):
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line = file.readline()
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while line[:1] == '#' or not line.strip():
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line = file.readline()
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if not line: break
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line = line.strip()
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if line[:4] == 'r"""': line = line[1:]
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if line[:3] == '"""':
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line = line[3:]
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if line[-1:] == '\\': line = line[:-1]
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while not line.strip():
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line = file.readline()
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if not line: break
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result = line.split('"""')[0].strip()
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else: result = None
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return result
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def synopsis(filename, cache={}):
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"""Get the one-line summary out of a module file."""
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mtime = os.stat(filename).st_mtime
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lastupdate, result = cache.get(filename, (None, None))
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if lastupdate is None or lastupdate < mtime:
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info = inspect.getmoduleinfo(filename)
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try:
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file = tokenize.open(filename)
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except IOError:
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# module can't be opened, so skip it
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return None
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if info and 'b' in info[2]: # binary modules have to be imported
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try: module = imp.load_module('__temp__', file, filename, info[1:])
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except: return None
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result = (module.__doc__ or '').splitlines()[0]
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del sys.modules['__temp__']
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else: # text modules can be directly examined
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result = source_synopsis(file)
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file.close()
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cache[filename] = (mtime, result)
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return result
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class ErrorDuringImport(Exception):
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"""Errors that occurred while trying to import something to document it."""
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def __init__(self, filename, exc_info):
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self.filename = filename
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self.exc, self.value, self.tb = exc_info
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def __str__(self):
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exc = self.exc.__name__
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return 'problem in %s - %s: %s' % (self.filename, exc, self.value)
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def importfile(path):
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"""Import a Python source file or compiled file given its path."""
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magic = imp.get_magic()
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with open(path, 'rb') as file:
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if file.read(len(magic)) == magic:
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kind = imp.PY_COMPILED
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else:
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kind = imp.PY_SOURCE
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file.seek(0)
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filename = os.path.basename(path)
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name, ext = os.path.splitext(filename)
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try:
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module = imp.load_module(name, file, path, (ext, 'r', kind))
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except:
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raise ErrorDuringImport(path, sys.exc_info())
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return module
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def safeimport(path, forceload=0, cache={}):
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"""Import a module; handle errors; return None if the module isn't found.
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If the module *is* found but an exception occurs, it's wrapped in an
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ErrorDuringImport exception and reraised. Unlike __import__, if a
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package path is specified, the module at the end of the path is returned,
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not the package at the beginning. If the optional 'forceload' argument
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is 1, we reload the module from disk (unless it's a dynamic extension)."""
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try:
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# If forceload is 1 and the module has been previously loaded from
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# disk, we always have to reload the module. Checking the file's
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# mtime isn't good enough (e.g. the module could contain a class
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# that inherits from another module that has changed).
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if forceload and path in sys.modules:
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if path not in sys.builtin_module_names:
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# Remove the module from sys.modules and re-import to try
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# and avoid problems with partially loaded modules.
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# Also remove any submodules because they won't appear
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# in the newly loaded module's namespace if they're already
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# in sys.modules.
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subs = [m for m in sys.modules if m.startswith(path + '.')]
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for key in [path] + subs:
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# Prevent garbage collection.
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cache[key] = sys.modules[key]
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del sys.modules[key]
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module = __import__(path)
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except:
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# Did the error occur before or after the module was found?
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(exc, value, tb) = info = sys.exc_info()
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if path in sys.modules:
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# An error occurred while executing the imported module.
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raise ErrorDuringImport(sys.modules[path].__file__, info)
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elif exc is SyntaxError:
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# A SyntaxError occurred before we could execute the module.
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raise ErrorDuringImport(value.filename, info)
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elif exc is ImportError and extract_tb(tb)[-1][2]=='safeimport':
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# The import error occurred directly in this function,
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# which means there is no such module in the path.
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return None
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else:
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# Some other error occurred during the importing process.
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raise ErrorDuringImport(path, sys.exc_info())
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for part in path.split('.')[1:]:
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try: module = getattr(module, part)
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except AttributeError: return None
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return module
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# ---------------------------------------------------- formatter base class
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class Doc:
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PYTHONDOCS = os.environ.get("PYTHONDOCS",
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"http://docs.python.org/%d.%d/library"
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% sys.version_info[:2])
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def document(self, object, name=None, *args):
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"""Generate documentation for an object."""
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args = (object, name) + args
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# 'try' clause is to attempt to handle the possibility that inspect
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# identifies something in a way that pydoc itself has issues handling;
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# think 'super' and how it is a descriptor (which raises the exception
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# by lacking a __name__ attribute) and an instance.
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if inspect.isgetsetdescriptor(object): return self.docdata(*args)
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if inspect.ismemberdescriptor(object): return self.docdata(*args)
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try:
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if inspect.ismodule(object): return self.docmodule(*args)
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if inspect.isclass(object): return self.docclass(*args)
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if inspect.isroutine(object): return self.docroutine(*args)
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except AttributeError:
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pass
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if isinstance(object, property): return self.docproperty(*args)
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return self.docother(*args)
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def fail(self, object, name=None, *args):
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"""Raise an exception for unimplemented types."""
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message = "don't know how to document object%s of type %s" % (
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name and ' ' + repr(name), type(object).__name__)
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raise TypeError(message)
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docmodule = docclass = docroutine = docother = docproperty = docdata = fail
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def getdocloc(self, object):
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"""Return the location of module docs or None"""
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try:
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file = inspect.getabsfile(object)
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except TypeError:
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file = '(built-in)'
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docloc = os.environ.get("PYTHONDOCS", self.PYTHONDOCS)
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basedir = os.path.join(sys.exec_prefix, "lib",
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"python%d.%d" % sys.version_info[:2])
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if (isinstance(object, type(os)) and
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(object.__name__ in ('errno', 'exceptions', 'gc', 'imp',
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'marshal', 'posix', 'signal', 'sys',
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'_thread', 'zipimport') or
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(file.startswith(basedir) and
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not file.startswith(os.path.join(basedir, 'site-packages')))) and
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object.__name__ not in ('xml.etree', 'test.pydoc_mod')):
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if docloc.startswith("http://"):
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docloc = "%s/%s" % (docloc.rstrip("/"), object.__name__)
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else:
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docloc = os.path.join(docloc, object.__name__ + ".html")
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else:
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docloc = None
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return docloc
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# -------------------------------------------- HTML documentation generator
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class HTMLRepr(Repr):
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"""Class for safely making an HTML representation of a Python object."""
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def __init__(self):
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Repr.__init__(self)
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self.maxlist = self.maxtuple = 20
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self.maxdict = 10
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self.maxstring = self.maxother = 100
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def escape(self, text):
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return replace(text, '&', '&', '<', '<', '>', '>')
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def repr(self, object):
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return Repr.repr(self, object)
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def repr1(self, x, level):
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if hasattr(type(x), '__name__'):
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methodname = 'repr_' + '_'.join(type(x).__name__.split())
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if hasattr(self, methodname):
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return getattr(self, methodname)(x, level)
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return self.escape(cram(stripid(repr(x)), self.maxother))
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def repr_string(self, x, level):
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test = cram(x, self.maxstring)
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testrepr = repr(test)
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if '\\' in test and '\\' not in replace(testrepr, r'\\', ''):
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# Backslashes are only literal in the string and are never
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# needed to make any special characters, so show a raw string.
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return 'r' + testrepr[0] + self.escape(test) + testrepr[0]
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return re.sub(r'((\\[\\abfnrtv\'"]|\\[0-9]..|\\x..|\\u....)+)',
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r'<font color="#c040c0">\1</font>',
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self.escape(testrepr))
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repr_str = repr_string
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def repr_instance(self, x, level):
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try:
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return self.escape(cram(stripid(repr(x)), self.maxstring))
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except:
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return self.escape('<%s instance>' % x.__class__.__name__)
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repr_unicode = repr_string
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class HTMLDoc(Doc):
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"""Formatter class for HTML documentation."""
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# ------------------------------------------- HTML formatting utilities
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_repr_instance = HTMLRepr()
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repr = _repr_instance.repr
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escape = _repr_instance.escape
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def page(self, title, contents):
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"""Format an HTML page."""
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return '''\
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<html><head><title>Python: %s</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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</head><body bgcolor="#f0f0f8">
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%s
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</body></html>''' % (title, contents)
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|
|
|
def heading(self, title, fgcol, bgcol, extras=''):
|
|
"""Format a page heading."""
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|
return '''
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|
<table width="100%%" cellspacing=0 cellpadding=2 border=0 summary="heading">
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<tr bgcolor="%s">
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|
<td valign=bottom> <br>
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|
<font color="%s" face="helvetica, arial"> <br>%s</font></td
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><td align=right valign=bottom
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><font color="%s" face="helvetica, arial">%s</font></td></tr></table>
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''' % (bgcol, fgcol, title, fgcol, extras or ' ')
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def section(self, title, fgcol, bgcol, contents, width=6,
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prelude='', marginalia=None, gap=' '):
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|
"""Format a section with a heading."""
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|
if marginalia is None:
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marginalia = '<tt>' + ' ' * width + '</tt>'
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result = '''<p>
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<table width="100%%" cellspacing=0 cellpadding=2 border=0 summary="section">
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<tr bgcolor="%s">
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<td colspan=3 valign=bottom> <br>
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<font color="%s" face="helvetica, arial">%s</font></td></tr>
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''' % (bgcol, fgcol, title)
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if prelude:
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result = result + '''
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<tr bgcolor="%s"><td rowspan=2>%s</td>
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<td colspan=2>%s</td></tr>
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<tr><td>%s</td>''' % (bgcol, marginalia, prelude, gap)
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else:
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result = result + '''
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<tr><td bgcolor="%s">%s</td><td>%s</td>''' % (bgcol, marginalia, gap)
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|
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return result + '\n<td width="100%%">%s</td></tr></table>' % contents
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|
|
def bigsection(self, title, *args):
|
|
"""Format a section with a big heading."""
|
|
title = '<big><strong>%s</strong></big>' % title
|
|
return self.section(title, *args)
|
|
|
|
def preformat(self, text):
|
|
"""Format literal preformatted text."""
|
|
text = self.escape(text.expandtabs())
|
|
return replace(text, '\n\n', '\n \n', '\n\n', '\n \n',
|
|
' ', ' ', '\n', '<br>\n')
|
|
|
|
def multicolumn(self, list, format, cols=4):
|
|
"""Format a list of items into a multi-column list."""
|
|
result = ''
|
|
rows = (len(list)+cols-1)//cols
|
|
for col in range(cols):
|
|
result = result + '<td width="%d%%" valign=top>' % (100//cols)
|
|
for i in range(rows*col, rows*col+rows):
|
|
if i < len(list):
|
|
result = result + format(list[i]) + '<br>\n'
|
|
result = result + '</td>'
|
|
return '<table width="100%%" summary="list"><tr>%s</tr></table>' % result
|
|
|
|
def grey(self, text): return '<font color="#909090">%s</font>' % text
|
|
|
|
def namelink(self, name, *dicts):
|
|
"""Make a link for an identifier, given name-to-URL mappings."""
|
|
for dict in dicts:
|
|
if name in dict:
|
|
return '<a href="%s">%s</a>' % (dict[name], name)
|
|
return name
|
|
|
|
def classlink(self, object, modname):
|
|
"""Make a link for a class."""
|
|
name, module = object.__name__, sys.modules.get(object.__module__)
|
|
if hasattr(module, name) and getattr(module, name) is object:
|
|
return '<a href="%s.html#%s">%s</a>' % (
|
|
module.__name__, name, classname(object, modname))
|
|
return classname(object, modname)
|
|
|
|
def modulelink(self, object):
|
|
"""Make a link for a module."""
|
|
return '<a href="%s.html">%s</a>' % (object.__name__, object.__name__)
|
|
|
|
def modpkglink(self, modpkginfo):
|
|
"""Make a link for a module or package to display in an index."""
|
|
name, path, ispackage, shadowed = modpkginfo
|
|
if shadowed:
|
|
return self.grey(name)
|
|
if path:
|
|
url = '%s.%s.html' % (path, name)
|
|
else:
|
|
url = '%s.html' % name
|
|
if ispackage:
|
|
text = '<strong>%s</strong> (package)' % name
|
|
else:
|
|
text = name
|
|
return '<a href="%s">%s</a>' % (url, text)
|
|
|
|
def filelink(self, url, path):
|
|
"""Make a link to source file."""
|
|
return '<a href="file:%s">%s</a>' % (url, path)
|
|
|
|
def markup(self, text, escape=None, funcs={}, classes={}, methods={}):
|
|
"""Mark up some plain text, given a context of symbols to look for.
|
|
Each context dictionary maps object names to anchor names."""
|
|
escape = escape or self.escape
|
|
results = []
|
|
here = 0
|
|
pattern = re.compile(r'\b((http|ftp)://\S+[\w/]|'
|
|
r'RFC[- ]?(\d+)|'
|
|
r'PEP[- ]?(\d+)|'
|
|
r'(self\.)?(\w+))')
|
|
while True:
|
|
match = pattern.search(text, here)
|
|
if not match: break
|
|
start, end = match.span()
|
|
results.append(escape(text[here:start]))
|
|
|
|
all, scheme, rfc, pep, selfdot, name = match.groups()
|
|
if scheme:
|
|
url = escape(all).replace('"', '"')
|
|
results.append('<a href="%s">%s</a>' % (url, url))
|
|
elif rfc:
|
|
url = 'http://www.rfc-editor.org/rfc/rfc%d.txt' % int(rfc)
|
|
results.append('<a href="%s">%s</a>' % (url, escape(all)))
|
|
elif pep:
|
|
url = 'http://www.python.org/dev/peps/pep-%04d/' % int(pep)
|
|
results.append('<a href="%s">%s</a>' % (url, escape(all)))
|
|
elif text[end:end+1] == '(':
|
|
results.append(self.namelink(name, methods, funcs, classes))
|
|
elif selfdot:
|
|
results.append('self.<strong>%s</strong>' % name)
|
|
else:
|
|
results.append(self.namelink(name, classes))
|
|
here = end
|
|
results.append(escape(text[here:]))
|
|
return ''.join(results)
|
|
|
|
# ---------------------------------------------- type-specific routines
|
|
|
|
def formattree(self, tree, modname, parent=None):
|
|
"""Produce HTML for a class tree as given by inspect.getclasstree()."""
|
|
result = ''
|
|
for entry in tree:
|
|
if type(entry) is type(()):
|
|
c, bases = entry
|
|
result = result + '<dt><font face="helvetica, arial">'
|
|
result = result + self.classlink(c, modname)
|
|
if bases and bases != (parent,):
|
|
parents = []
|
|
for base in bases:
|
|
parents.append(self.classlink(base, modname))
|
|
result = result + '(' + ', '.join(parents) + ')'
|
|
result = result + '\n</font></dt>'
|
|
elif type(entry) is type([]):
|
|
result = result + '<dd>\n%s</dd>\n' % self.formattree(
|
|
entry, modname, c)
|
|
return '<dl>\n%s</dl>\n' % result
|
|
|
|
def docmodule(self, object, name=None, mod=None, *ignored):
|
|
"""Produce HTML documentation for a module object."""
|
|
name = object.__name__ # ignore the passed-in name
|
|
try:
|
|
all = object.__all__
|
|
except AttributeError:
|
|
all = None
|
|
parts = name.split('.')
|
|
links = []
|
|
for i in range(len(parts)-1):
|
|
links.append(
|
|
'<a href="%s.html"><font color="#ffffff">%s</font></a>' %
|
|
('.'.join(parts[:i+1]), parts[i]))
|
|
linkedname = '.'.join(links + parts[-1:])
|
|
head = '<big><big><strong>%s</strong></big></big>' % linkedname
|
|
try:
|
|
path = inspect.getabsfile(object)
|
|
url = path
|
|
if sys.platform == 'win32':
|
|
import nturl2path
|
|
url = nturl2path.pathname2url(path)
|
|
filelink = self.filelink(url, path)
|
|
except TypeError:
|
|
filelink = '(built-in)'
|
|
info = []
|
|
if hasattr(object, '__version__'):
|
|
version = str(object.__version__)
|
|
if version[:11] == '$' + 'Revision: ' and version[-1:] == '$':
|
|
version = version[11:-1].strip()
|
|
info.append('version %s' % self.escape(version))
|
|
if hasattr(object, '__date__'):
|
|
info.append(self.escape(str(object.__date__)))
|
|
if info:
|
|
head = head + ' (%s)' % ', '.join(info)
|
|
docloc = self.getdocloc(object)
|
|
if docloc is not None:
|
|
docloc = '<br><a href="%(docloc)s">Module Reference</a>' % locals()
|
|
else:
|
|
docloc = ''
|
|
result = self.heading(
|
|
head, '#ffffff', '#7799ee',
|
|
'<a href=".">index</a><br>' + filelink + docloc)
|
|
|
|
modules = inspect.getmembers(object, inspect.ismodule)
|
|
|
|
classes, cdict = [], {}
|
|
for key, value in inspect.getmembers(object, inspect.isclass):
|
|
# if __all__ exists, believe it. Otherwise use old heuristic.
|
|
if (all is not None or
|
|
(inspect.getmodule(value) or object) is object):
|
|
if visiblename(key, all, object):
|
|
classes.append((key, value))
|
|
cdict[key] = cdict[value] = '#' + key
|
|
for key, value in classes:
|
|
for base in value.__bases__:
|
|
key, modname = base.__name__, base.__module__
|
|
module = sys.modules.get(modname)
|
|
if modname != name and module and hasattr(module, key):
|
|
if getattr(module, key) is base:
|
|
if not key in cdict:
|
|
cdict[key] = cdict[base] = modname + '.html#' + key
|
|
funcs, fdict = [], {}
|
|
for key, value in inspect.getmembers(object, inspect.isroutine):
|
|
# if __all__ exists, believe it. Otherwise use old heuristic.
|
|
if (all is not None or
|
|
inspect.isbuiltin(value) or inspect.getmodule(value) is object):
|
|
if visiblename(key, all, object):
|
|
funcs.append((key, value))
|
|
fdict[key] = '#-' + key
|
|
if inspect.isfunction(value): fdict[value] = fdict[key]
|
|
data = []
|
|
for key, value in inspect.getmembers(object, isdata):
|
|
if visiblename(key, all, object):
|
|
data.append((key, value))
|
|
|
|
doc = self.markup(getdoc(object), self.preformat, fdict, cdict)
|
|
doc = doc and '<tt>%s</tt>' % doc
|
|
result = result + '<p>%s</p>\n' % doc
|
|
|
|
if hasattr(object, '__path__'):
|
|
modpkgs = []
|
|
for importer, modname, ispkg in pkgutil.iter_modules(object.__path__):
|
|
modpkgs.append((modname, name, ispkg, 0))
|
|
modpkgs.sort()
|
|
contents = self.multicolumn(modpkgs, self.modpkglink)
|
|
result = result + self.bigsection(
|
|
'Package Contents', '#ffffff', '#aa55cc', contents)
|
|
elif modules:
|
|
contents = self.multicolumn(
|
|
modules, lambda t: self.modulelink(t[1]))
|
|
result = result + self.bigsection(
|
|
'Modules', '#ffffff', '#aa55cc', contents)
|
|
|
|
if classes:
|
|
classlist = [value for (key, value) in classes]
|
|
contents = [
|
|
self.formattree(inspect.getclasstree(classlist, 1), name)]
|
|
for key, value in classes:
|
|
contents.append(self.document(value, key, name, fdict, cdict))
|
|
result = result + self.bigsection(
|
|
'Classes', '#ffffff', '#ee77aa', ' '.join(contents))
|
|
if funcs:
|
|
contents = []
|
|
for key, value in funcs:
|
|
contents.append(self.document(value, key, name, fdict, cdict))
|
|
result = result + self.bigsection(
|
|
'Functions', '#ffffff', '#eeaa77', ' '.join(contents))
|
|
if data:
|
|
contents = []
|
|
for key, value in data:
|
|
contents.append(self.document(value, key))
|
|
result = result + self.bigsection(
|
|
'Data', '#ffffff', '#55aa55', '<br>\n'.join(contents))
|
|
if hasattr(object, '__author__'):
|
|
contents = self.markup(str(object.__author__), self.preformat)
|
|
result = result + self.bigsection(
|
|
'Author', '#ffffff', '#7799ee', contents)
|
|
if hasattr(object, '__credits__'):
|
|
contents = self.markup(str(object.__credits__), self.preformat)
|
|
result = result + self.bigsection(
|
|
'Credits', '#ffffff', '#7799ee', contents)
|
|
|
|
return result
|
|
|
|
def docclass(self, object, name=None, mod=None, funcs={}, classes={},
|
|
*ignored):
|
|
"""Produce HTML documentation for a class object."""
|
|
realname = object.__name__
|
|
name = name or realname
|
|
bases = object.__bases__
|
|
|
|
contents = []
|
|
push = contents.append
|
|
|
|
# Cute little class to pump out a horizontal rule between sections.
|
|
class HorizontalRule:
|
|
def __init__(self):
|
|
self.needone = 0
|
|
def maybe(self):
|
|
if self.needone:
|
|
push('<hr>\n')
|
|
self.needone = 1
|
|
hr = HorizontalRule()
|
|
|
|
# List the mro, if non-trivial.
|
|
mro = deque(inspect.getmro(object))
|
|
if len(mro) > 2:
|
|
hr.maybe()
|
|
push('<dl><dt>Method resolution order:</dt>\n')
|
|
for base in mro:
|
|
push('<dd>%s</dd>\n' % self.classlink(base,
|
|
object.__module__))
|
|
push('</dl>\n')
|
|
|
|
def spill(msg, attrs, predicate):
|
|
ok, attrs = _split_list(attrs, predicate)
|
|
if ok:
|
|
hr.maybe()
|
|
push(msg)
|
|
for name, kind, homecls, value in ok:
|
|
push(self.document(getattr(object, name), name, mod,
|
|
funcs, classes, mdict, object))
|
|
push('\n')
|
|
return attrs
|
|
|
|
def spilldescriptors(msg, attrs, predicate):
|
|
ok, attrs = _split_list(attrs, predicate)
|
|
if ok:
|
|
hr.maybe()
|
|
push(msg)
|
|
for name, kind, homecls, value in ok:
|
|
push(self._docdescriptor(name, value, mod))
|
|
return attrs
|
|
|
|
def spilldata(msg, attrs, predicate):
|
|
ok, attrs = _split_list(attrs, predicate)
|
|
if ok:
|
|
hr.maybe()
|
|
push(msg)
|
|
for name, kind, homecls, value in ok:
|
|
base = self.docother(getattr(object, name), name, mod)
|
|
if hasattr(value, '__call__') or inspect.isdatadescriptor(value):
|
|
doc = getattr(value, "__doc__", None)
|
|
else:
|
|
doc = None
|
|
if doc is None:
|
|
push('<dl><dt>%s</dl>\n' % base)
|
|
else:
|
|
doc = self.markup(getdoc(value), self.preformat,
|
|
funcs, classes, mdict)
|
|
doc = '<dd><tt>%s</tt>' % doc
|
|
push('<dl><dt>%s%s</dl>\n' % (base, doc))
|
|
push('\n')
|
|
return attrs
|
|
|
|
attrs = [(name, kind, cls, value)
|
|
for name, kind, cls, value in classify_class_attrs(object)
|
|
if visiblename(name, obj=object)]
|
|
|
|
mdict = {}
|
|
for key, kind, homecls, value in attrs:
|
|
mdict[key] = anchor = '#' + name + '-' + key
|
|
value = getattr(object, key)
|
|
try:
|
|
# The value may not be hashable (e.g., a data attr with
|
|
# a dict or list value).
|
|
mdict[value] = anchor
|
|
except TypeError:
|
|
pass
|
|
|
|
while attrs:
|
|
if mro:
|
|
thisclass = mro.popleft()
|
|
else:
|
|
thisclass = attrs[0][2]
|
|
attrs, inherited = _split_list(attrs, lambda t: t[2] is thisclass)
|
|
|
|
if thisclass is builtins.object:
|
|
attrs = inherited
|
|
continue
|
|
elif thisclass is object:
|
|
tag = 'defined here'
|
|
else:
|
|
tag = 'inherited from %s' % self.classlink(thisclass,
|
|
object.__module__)
|
|
tag += ':<br>\n'
|
|
|
|
# Sort attrs by name.
|
|
attrs.sort(key=lambda t: t[0])
|
|
|
|
# Pump out the attrs, segregated by kind.
|
|
attrs = spill('Methods %s' % tag, attrs,
|
|
lambda t: t[1] == 'method')
|
|
attrs = spill('Class methods %s' % tag, attrs,
|
|
lambda t: t[1] == 'class method')
|
|
attrs = spill('Static methods %s' % tag, attrs,
|
|
lambda t: t[1] == 'static method')
|
|
attrs = spilldescriptors('Data descriptors %s' % tag, attrs,
|
|
lambda t: t[1] == 'data descriptor')
|
|
attrs = spilldata('Data and other attributes %s' % tag, attrs,
|
|
lambda t: t[1] == 'data')
|
|
assert attrs == []
|
|
attrs = inherited
|
|
|
|
contents = ''.join(contents)
|
|
|
|
if name == realname:
|
|
title = '<a name="%s">class <strong>%s</strong></a>' % (
|
|
name, realname)
|
|
else:
|
|
title = '<strong>%s</strong> = <a name="%s">class %s</a>' % (
|
|
name, name, realname)
|
|
if bases:
|
|
parents = []
|
|
for base in bases:
|
|
parents.append(self.classlink(base, object.__module__))
|
|
title = title + '(%s)' % ', '.join(parents)
|
|
doc = self.markup(getdoc(object), self.preformat, funcs, classes, mdict)
|
|
doc = doc and '<tt>%s<br> </tt>' % doc
|
|
|
|
return self.section(title, '#000000', '#ffc8d8', contents, 3, doc)
|
|
|
|
def formatvalue(self, object):
|
|
"""Format an argument default value as text."""
|
|
return self.grey('=' + self.repr(object))
|
|
|
|
def docroutine(self, object, name=None, mod=None,
|
|
funcs={}, classes={}, methods={}, cl=None):
|
|
"""Produce HTML documentation for a function or method object."""
|
|
realname = object.__name__
|
|
name = name or realname
|
|
anchor = (cl and cl.__name__ or '') + '-' + name
|
|
note = ''
|
|
skipdocs = 0
|
|
if inspect.ismethod(object):
|
|
imclass = object.__self__.__class__
|
|
if cl:
|
|
if imclass is not cl:
|
|
note = ' from ' + self.classlink(imclass, mod)
|
|
else:
|
|
if object.__self__ is not None:
|
|
note = ' method of %s instance' % self.classlink(
|
|
object.__self__.__class__, mod)
|
|
else:
|
|
note = ' unbound %s method' % self.classlink(imclass,mod)
|
|
object = object.__func__
|
|
|
|
if name == realname:
|
|
title = '<a name="%s"><strong>%s</strong></a>' % (anchor, realname)
|
|
else:
|
|
if (cl and realname in cl.__dict__ and
|
|
cl.__dict__[realname] is object):
|
|
reallink = '<a href="#%s">%s</a>' % (
|
|
cl.__name__ + '-' + realname, realname)
|
|
skipdocs = 1
|
|
else:
|
|
reallink = realname
|
|
title = '<a name="%s"><strong>%s</strong></a> = %s' % (
|
|
anchor, name, reallink)
|
|
if inspect.isfunction(object):
|
|
args, varargs, kwonlyargs, kwdefaults, varkw, defaults, ann = \
|
|
inspect.getfullargspec(object)
|
|
argspec = inspect.formatargspec(
|
|
args, varargs, kwonlyargs, kwdefaults, varkw, defaults, ann,
|
|
formatvalue=self.formatvalue,
|
|
formatannotation=inspect.formatannotationrelativeto(object))
|
|
if realname == '<lambda>':
|
|
title = '<strong>%s</strong> <em>lambda</em> ' % name
|
|
# XXX lambda's won't usually have func_annotations['return']
|
|
# since the syntax doesn't support but it is possible.
|
|
# So removing parentheses isn't truly safe.
|
|
argspec = argspec[1:-1] # remove parentheses
|
|
else:
|
|
argspec = '(...)'
|
|
|
|
decl = title + argspec + (note and self.grey(
|
|
'<font face="helvetica, arial">%s</font>' % note))
|
|
|
|
if skipdocs:
|
|
return '<dl><dt>%s</dt></dl>\n' % decl
|
|
else:
|
|
doc = self.markup(
|
|
getdoc(object), self.preformat, funcs, classes, methods)
|
|
doc = doc and '<dd><tt>%s</tt></dd>' % doc
|
|
return '<dl><dt>%s</dt>%s</dl>\n' % (decl, doc)
|
|
|
|
def _docdescriptor(self, name, value, mod):
|
|
results = []
|
|
push = results.append
|
|
|
|
if name:
|
|
push('<dl><dt><strong>%s</strong></dt>\n' % name)
|
|
if value.__doc__ is not None:
|
|
doc = self.markup(getdoc(value), self.preformat)
|
|
push('<dd><tt>%s</tt></dd>\n' % doc)
|
|
push('</dl>\n')
|
|
|
|
return ''.join(results)
|
|
|
|
def docproperty(self, object, name=None, mod=None, cl=None):
|
|
"""Produce html documentation for a property."""
|
|
return self._docdescriptor(name, object, mod)
|
|
|
|
def docother(self, object, name=None, mod=None, *ignored):
|
|
"""Produce HTML documentation for a data object."""
|
|
lhs = name and '<strong>%s</strong> = ' % name or ''
|
|
return lhs + self.repr(object)
|
|
|
|
def docdata(self, object, name=None, mod=None, cl=None):
|
|
"""Produce html documentation for a data descriptor."""
|
|
return self._docdescriptor(name, object, mod)
|
|
|
|
def index(self, dir, shadowed=None):
|
|
"""Generate an HTML index for a directory of modules."""
|
|
modpkgs = []
|
|
if shadowed is None: shadowed = {}
|
|
for importer, name, ispkg in pkgutil.iter_modules([dir]):
|
|
if any((0xD800 <= ord(ch) <= 0xDFFF) for ch in name):
|
|
# ignore a module if its name contains a surrogate character
|
|
continue
|
|
modpkgs.append((name, '', ispkg, name in shadowed))
|
|
shadowed[name] = 1
|
|
|
|
modpkgs.sort()
|
|
contents = self.multicolumn(modpkgs, self.modpkglink)
|
|
return self.bigsection(dir, '#ffffff', '#ee77aa', contents)
|
|
|
|
# -------------------------------------------- text documentation generator
|
|
|
|
class TextRepr(Repr):
|
|
"""Class for safely making a text representation of a Python object."""
|
|
def __init__(self):
|
|
Repr.__init__(self)
|
|
self.maxlist = self.maxtuple = 20
|
|
self.maxdict = 10
|
|
self.maxstring = self.maxother = 100
|
|
|
|
def repr1(self, x, level):
|
|
if hasattr(type(x), '__name__'):
|
|
methodname = 'repr_' + '_'.join(type(x).__name__.split())
|
|
if hasattr(self, methodname):
|
|
return getattr(self, methodname)(x, level)
|
|
return cram(stripid(repr(x)), self.maxother)
|
|
|
|
def repr_string(self, x, level):
|
|
test = cram(x, self.maxstring)
|
|
testrepr = repr(test)
|
|
if '\\' in test and '\\' not in replace(testrepr, r'\\', ''):
|
|
# Backslashes are only literal in the string and are never
|
|
# needed to make any special characters, so show a raw string.
|
|
return 'r' + testrepr[0] + test + testrepr[0]
|
|
return testrepr
|
|
|
|
repr_str = repr_string
|
|
|
|
def repr_instance(self, x, level):
|
|
try:
|
|
return cram(stripid(repr(x)), self.maxstring)
|
|
except:
|
|
return '<%s instance>' % x.__class__.__name__
|
|
|
|
class TextDoc(Doc):
|
|
"""Formatter class for text documentation."""
|
|
|
|
# ------------------------------------------- text formatting utilities
|
|
|
|
_repr_instance = TextRepr()
|
|
repr = _repr_instance.repr
|
|
|
|
def bold(self, text):
|
|
"""Format a string in bold by overstriking."""
|
|
return ''.join(ch + '\b' + ch for ch in text)
|
|
|
|
def indent(self, text, prefix=' '):
|
|
"""Indent text by prepending a given prefix to each line."""
|
|
if not text: return ''
|
|
lines = [prefix + line for line in text.split('\n')]
|
|
if lines: lines[-1] = lines[-1].rstrip()
|
|
return '\n'.join(lines)
|
|
|
|
def section(self, title, contents):
|
|
"""Format a section with a given heading."""
|
|
clean_contents = self.indent(contents).rstrip()
|
|
return self.bold(title) + '\n' + clean_contents + '\n\n'
|
|
|
|
# ---------------------------------------------- type-specific routines
|
|
|
|
def formattree(self, tree, modname, parent=None, prefix=''):
|
|
"""Render in text a class tree as returned by inspect.getclasstree()."""
|
|
result = ''
|
|
for entry in tree:
|
|
if type(entry) is type(()):
|
|
c, bases = entry
|
|
result = result + prefix + classname(c, modname)
|
|
if bases and bases != (parent,):
|
|
parents = (classname(c, modname) for c in bases)
|
|
result = result + '(%s)' % ', '.join(parents)
|
|
result = result + '\n'
|
|
elif type(entry) is type([]):
|
|
result = result + self.formattree(
|
|
entry, modname, c, prefix + ' ')
|
|
return result
|
|
|
|
def docmodule(self, object, name=None, mod=None):
|
|
"""Produce text documentation for a given module object."""
|
|
name = object.__name__ # ignore the passed-in name
|
|
synop, desc = splitdoc(getdoc(object))
|
|
result = self.section('NAME', name + (synop and ' - ' + synop))
|
|
all = getattr(object, '__all__', None)
|
|
docloc = self.getdocloc(object)
|
|
if docloc is not None:
|
|
result = result + self.section('MODULE REFERENCE', docloc + """
|
|
|
|
The following documentation is automatically generated from the Python
|
|
source files. It may be incomplete, incorrect or include features that
|
|
are considered implementation detail and may vary between Python
|
|
implementations. When in doubt, consult the module reference at the
|
|
location listed above.
|
|
""")
|
|
|
|
if desc:
|
|
result = result + self.section('DESCRIPTION', desc)
|
|
|
|
classes = []
|
|
for key, value in inspect.getmembers(object, inspect.isclass):
|
|
# if __all__ exists, believe it. Otherwise use old heuristic.
|
|
if (all is not None
|
|
or (inspect.getmodule(value) or object) is object):
|
|
if visiblename(key, all, object):
|
|
classes.append((key, value))
|
|
funcs = []
|
|
for key, value in inspect.getmembers(object, inspect.isroutine):
|
|
# if __all__ exists, believe it. Otherwise use old heuristic.
|
|
if (all is not None or
|
|
inspect.isbuiltin(value) or inspect.getmodule(value) is object):
|
|
if visiblename(key, all, object):
|
|
funcs.append((key, value))
|
|
data = []
|
|
for key, value in inspect.getmembers(object, isdata):
|
|
if visiblename(key, all, object):
|
|
data.append((key, value))
|
|
|
|
modpkgs = []
|
|
modpkgs_names = set()
|
|
if hasattr(object, '__path__'):
|
|
for importer, modname, ispkg in pkgutil.iter_modules(object.__path__):
|
|
modpkgs_names.add(modname)
|
|
if ispkg:
|
|
modpkgs.append(modname + ' (package)')
|
|
else:
|
|
modpkgs.append(modname)
|
|
|
|
modpkgs.sort()
|
|
result = result + self.section(
|
|
'PACKAGE CONTENTS', '\n'.join(modpkgs))
|
|
|
|
# Detect submodules as sometimes created by C extensions
|
|
submodules = []
|
|
for key, value in inspect.getmembers(object, inspect.ismodule):
|
|
if value.__name__.startswith(name + '.') and key not in modpkgs_names:
|
|
submodules.append(key)
|
|
if submodules:
|
|
submodules.sort()
|
|
result = result + self.section(
|
|
'SUBMODULES', '\n'.join(submodules))
|
|
|
|
if classes:
|
|
classlist = [value for key, value in classes]
|
|
contents = [self.formattree(
|
|
inspect.getclasstree(classlist, 1), name)]
|
|
for key, value in classes:
|
|
contents.append(self.document(value, key, name))
|
|
result = result + self.section('CLASSES', '\n'.join(contents))
|
|
|
|
if funcs:
|
|
contents = []
|
|
for key, value in funcs:
|
|
contents.append(self.document(value, key, name))
|
|
result = result + self.section('FUNCTIONS', '\n'.join(contents))
|
|
|
|
if data:
|
|
contents = []
|
|
for key, value in data:
|
|
contents.append(self.docother(value, key, name, maxlen=70))
|
|
result = result + self.section('DATA', '\n'.join(contents))
|
|
|
|
if hasattr(object, '__version__'):
|
|
version = str(object.__version__)
|
|
if version[:11] == '$' + 'Revision: ' and version[-1:] == '$':
|
|
version = version[11:-1].strip()
|
|
result = result + self.section('VERSION', version)
|
|
if hasattr(object, '__date__'):
|
|
result = result + self.section('DATE', str(object.__date__))
|
|
if hasattr(object, '__author__'):
|
|
result = result + self.section('AUTHOR', str(object.__author__))
|
|
if hasattr(object, '__credits__'):
|
|
result = result + self.section('CREDITS', str(object.__credits__))
|
|
try:
|
|
file = inspect.getabsfile(object)
|
|
except TypeError:
|
|
file = '(built-in)'
|
|
result = result + self.section('FILE', file)
|
|
return result
|
|
|
|
def docclass(self, object, name=None, mod=None, *ignored):
|
|
"""Produce text documentation for a given class object."""
|
|
realname = object.__name__
|
|
name = name or realname
|
|
bases = object.__bases__
|
|
|
|
def makename(c, m=object.__module__):
|
|
return classname(c, m)
|
|
|
|
if name == realname:
|
|
title = 'class ' + self.bold(realname)
|
|
else:
|
|
title = self.bold(name) + ' = class ' + realname
|
|
if bases:
|
|
parents = map(makename, bases)
|
|
title = title + '(%s)' % ', '.join(parents)
|
|
|
|
doc = getdoc(object)
|
|
contents = doc and [doc + '\n'] or []
|
|
push = contents.append
|
|
|
|
# List the mro, if non-trivial.
|
|
mro = deque(inspect.getmro(object))
|
|
if len(mro) > 2:
|
|
push("Method resolution order:")
|
|
for base in mro:
|
|
push(' ' + makename(base))
|
|
push('')
|
|
|
|
# Cute little class to pump out a horizontal rule between sections.
|
|
class HorizontalRule:
|
|
def __init__(self):
|
|
self.needone = 0
|
|
def maybe(self):
|
|
if self.needone:
|
|
push('-' * 70)
|
|
self.needone = 1
|
|
hr = HorizontalRule()
|
|
|
|
def spill(msg, attrs, predicate):
|
|
ok, attrs = _split_list(attrs, predicate)
|
|
if ok:
|
|
hr.maybe()
|
|
push(msg)
|
|
for name, kind, homecls, value in ok:
|
|
push(self.document(getattr(object, name),
|
|
name, mod, object))
|
|
return attrs
|
|
|
|
def spilldescriptors(msg, attrs, predicate):
|
|
ok, attrs = _split_list(attrs, predicate)
|
|
if ok:
|
|
hr.maybe()
|
|
push(msg)
|
|
for name, kind, homecls, value in ok:
|
|
push(self._docdescriptor(name, value, mod))
|
|
return attrs
|
|
|
|
def spilldata(msg, attrs, predicate):
|
|
ok, attrs = _split_list(attrs, predicate)
|
|
if ok:
|
|
hr.maybe()
|
|
push(msg)
|
|
for name, kind, homecls, value in ok:
|
|
if hasattr(value, '__call__') or inspect.isdatadescriptor(value):
|
|
doc = getdoc(value)
|
|
else:
|
|
doc = None
|
|
push(self.docother(getattr(object, name),
|
|
name, mod, maxlen=70, doc=doc) + '\n')
|
|
return attrs
|
|
|
|
attrs = [(name, kind, cls, value)
|
|
for name, kind, cls, value in classify_class_attrs(object)
|
|
if visiblename(name, obj=object)]
|
|
|
|
while attrs:
|
|
if mro:
|
|
thisclass = mro.popleft()
|
|
else:
|
|
thisclass = attrs[0][2]
|
|
attrs, inherited = _split_list(attrs, lambda t: t[2] is thisclass)
|
|
|
|
if thisclass is builtins.object:
|
|
attrs = inherited
|
|
continue
|
|
elif thisclass is object:
|
|
tag = "defined here"
|
|
else:
|
|
tag = "inherited from %s" % classname(thisclass,
|
|
object.__module__)
|
|
|
|
# Sort attrs by name.
|
|
attrs.sort()
|
|
|
|
# Pump out the attrs, segregated by kind.
|
|
attrs = spill("Methods %s:\n" % tag, attrs,
|
|
lambda t: t[1] == 'method')
|
|
attrs = spill("Class methods %s:\n" % tag, attrs,
|
|
lambda t: t[1] == 'class method')
|
|
attrs = spill("Static methods %s:\n" % tag, attrs,
|
|
lambda t: t[1] == 'static method')
|
|
attrs = spilldescriptors("Data descriptors %s:\n" % tag, attrs,
|
|
lambda t: t[1] == 'data descriptor')
|
|
attrs = spilldata("Data and other attributes %s:\n" % tag, attrs,
|
|
lambda t: t[1] == 'data')
|
|
assert attrs == []
|
|
attrs = inherited
|
|
|
|
contents = '\n'.join(contents)
|
|
if not contents:
|
|
return title + '\n'
|
|
return title + '\n' + self.indent(contents.rstrip(), ' | ') + '\n'
|
|
|
|
def formatvalue(self, object):
|
|
"""Format an argument default value as text."""
|
|
return '=' + self.repr(object)
|
|
|
|
def docroutine(self, object, name=None, mod=None, cl=None):
|
|
"""Produce text documentation for a function or method object."""
|
|
realname = object.__name__
|
|
name = name or realname
|
|
note = ''
|
|
skipdocs = 0
|
|
if inspect.ismethod(object):
|
|
imclass = object.__self__.__class__
|
|
if cl:
|
|
if imclass is not cl:
|
|
note = ' from ' + classname(imclass, mod)
|
|
else:
|
|
if object.__self__ is not None:
|
|
note = ' method of %s instance' % classname(
|
|
object.__self__.__class__, mod)
|
|
else:
|
|
note = ' unbound %s method' % classname(imclass,mod)
|
|
object = object.__func__
|
|
|
|
if name == realname:
|
|
title = self.bold(realname)
|
|
else:
|
|
if (cl and realname in cl.__dict__ and
|
|
cl.__dict__[realname] is object):
|
|
skipdocs = 1
|
|
title = self.bold(name) + ' = ' + realname
|
|
if inspect.isfunction(object):
|
|
args, varargs, varkw, defaults, kwonlyargs, kwdefaults, ann = \
|
|
inspect.getfullargspec(object)
|
|
argspec = inspect.formatargspec(
|
|
args, varargs, varkw, defaults, kwonlyargs, kwdefaults, ann,
|
|
formatvalue=self.formatvalue,
|
|
formatannotation=inspect.formatannotationrelativeto(object))
|
|
if realname == '<lambda>':
|
|
title = self.bold(name) + ' lambda '
|
|
# XXX lambda's won't usually have func_annotations['return']
|
|
# since the syntax doesn't support but it is possible.
|
|
# So removing parentheses isn't truly safe.
|
|
argspec = argspec[1:-1] # remove parentheses
|
|
else:
|
|
argspec = '(...)'
|
|
decl = title + argspec + note
|
|
|
|
if skipdocs:
|
|
return decl + '\n'
|
|
else:
|
|
doc = getdoc(object) or ''
|
|
return decl + '\n' + (doc and self.indent(doc).rstrip() + '\n')
|
|
|
|
def _docdescriptor(self, name, value, mod):
|
|
results = []
|
|
push = results.append
|
|
|
|
if name:
|
|
push(self.bold(name))
|
|
push('\n')
|
|
doc = getdoc(value) or ''
|
|
if doc:
|
|
push(self.indent(doc))
|
|
push('\n')
|
|
return ''.join(results)
|
|
|
|
def docproperty(self, object, name=None, mod=None, cl=None):
|
|
"""Produce text documentation for a property."""
|
|
return self._docdescriptor(name, object, mod)
|
|
|
|
def docdata(self, object, name=None, mod=None, cl=None):
|
|
"""Produce text documentation for a data descriptor."""
|
|
return self._docdescriptor(name, object, mod)
|
|
|
|
def docother(self, object, name=None, mod=None, parent=None, maxlen=None, doc=None):
|
|
"""Produce text documentation for a data object."""
|
|
repr = self.repr(object)
|
|
if maxlen:
|
|
line = (name and name + ' = ' or '') + repr
|
|
chop = maxlen - len(line)
|
|
if chop < 0: repr = repr[:chop] + '...'
|
|
line = (name and self.bold(name) + ' = ' or '') + repr
|
|
if doc is not None:
|
|
line += '\n' + self.indent(str(doc))
|
|
return line
|
|
|
|
class _PlainTextDoc(TextDoc):
|
|
"""Subclass of TextDoc which overrides string styling"""
|
|
def bold(self, text):
|
|
return text
|
|
|
|
# --------------------------------------------------------- user interfaces
|
|
|
|
def pager(text):
|
|
"""The first time this is called, determine what kind of pager to use."""
|
|
global pager
|
|
pager = getpager()
|
|
pager(text)
|
|
|
|
def getpager():
|
|
"""Decide what method to use for paging through text."""
|
|
if not hasattr(sys.stdout, "isatty"):
|
|
return plainpager
|
|
if not sys.stdin.isatty() or not sys.stdout.isatty():
|
|
return plainpager
|
|
if 'PAGER' in os.environ:
|
|
if sys.platform == 'win32': # pipes completely broken in Windows
|
|
return lambda text: tempfilepager(plain(text), os.environ['PAGER'])
|
|
elif os.environ.get('TERM') in ('dumb', 'emacs'):
|
|
return lambda text: pipepager(plain(text), os.environ['PAGER'])
|
|
else:
|
|
return lambda text: pipepager(text, os.environ['PAGER'])
|
|
if os.environ.get('TERM') in ('dumb', 'emacs'):
|
|
return plainpager
|
|
if sys.platform == 'win32' or sys.platform.startswith('os2'):
|
|
return lambda text: tempfilepager(plain(text), 'more <')
|
|
if hasattr(os, 'system') and os.system('(less) 2>/dev/null') == 0:
|
|
return lambda text: pipepager(text, 'less')
|
|
|
|
import tempfile
|
|
(fd, filename) = tempfile.mkstemp()
|
|
os.close(fd)
|
|
try:
|
|
if hasattr(os, 'system') and os.system('more "%s"' % filename) == 0:
|
|
return lambda text: pipepager(text, 'more')
|
|
else:
|
|
return ttypager
|
|
finally:
|
|
os.unlink(filename)
|
|
|
|
def plain(text):
|
|
"""Remove boldface formatting from text."""
|
|
return re.sub('.\b', '', text)
|
|
|
|
def pipepager(text, cmd):
|
|
"""Page through text by feeding it to another program."""
|
|
pipe = os.popen(cmd, 'w')
|
|
try:
|
|
pipe.write(text)
|
|
pipe.close()
|
|
except IOError:
|
|
pass # Ignore broken pipes caused by quitting the pager program.
|
|
|
|
def tempfilepager(text, cmd):
|
|
"""Page through text by invoking a program on a temporary file."""
|
|
import tempfile
|
|
filename = tempfile.mktemp()
|
|
file = open(filename, 'w')
|
|
file.write(text)
|
|
file.close()
|
|
try:
|
|
os.system(cmd + ' "' + filename + '"')
|
|
finally:
|
|
os.unlink(filename)
|
|
|
|
def ttypager(text):
|
|
"""Page through text on a text terminal."""
|
|
lines = plain(text).split('\n')
|
|
try:
|
|
import tty
|
|
fd = sys.stdin.fileno()
|
|
old = tty.tcgetattr(fd)
|
|
tty.setcbreak(fd)
|
|
getchar = lambda: sys.stdin.read(1)
|
|
except (ImportError, AttributeError):
|
|
tty = None
|
|
getchar = lambda: sys.stdin.readline()[:-1][:1]
|
|
|
|
try:
|
|
r = inc = os.environ.get('LINES', 25) - 1
|
|
sys.stdout.write('\n'.join(lines[:inc]) + '\n')
|
|
while lines[r:]:
|
|
sys.stdout.write('-- more --')
|
|
sys.stdout.flush()
|
|
c = getchar()
|
|
|
|
if c in ('q', 'Q'):
|
|
sys.stdout.write('\r \r')
|
|
break
|
|
elif c in ('\r', '\n'):
|
|
sys.stdout.write('\r \r' + lines[r] + '\n')
|
|
r = r + 1
|
|
continue
|
|
if c in ('b', 'B', '\x1b'):
|
|
r = r - inc - inc
|
|
if r < 0: r = 0
|
|
sys.stdout.write('\n' + '\n'.join(lines[r:r+inc]) + '\n')
|
|
r = r + inc
|
|
|
|
finally:
|
|
if tty:
|
|
tty.tcsetattr(fd, tty.TCSAFLUSH, old)
|
|
|
|
def plainpager(text):
|
|
"""Simply print unformatted text. This is the ultimate fallback."""
|
|
sys.stdout.write(plain(text))
|
|
|
|
def describe(thing):
|
|
"""Produce a short description of the given thing."""
|
|
if inspect.ismodule(thing):
|
|
if thing.__name__ in sys.builtin_module_names:
|
|
return 'built-in module ' + thing.__name__
|
|
if hasattr(thing, '__path__'):
|
|
return 'package ' + thing.__name__
|
|
else:
|
|
return 'module ' + thing.__name__
|
|
if inspect.isbuiltin(thing):
|
|
return 'built-in function ' + thing.__name__
|
|
if inspect.isgetsetdescriptor(thing):
|
|
return 'getset descriptor %s.%s.%s' % (
|
|
thing.__objclass__.__module__, thing.__objclass__.__name__,
|
|
thing.__name__)
|
|
if inspect.ismemberdescriptor(thing):
|
|
return 'member descriptor %s.%s.%s' % (
|
|
thing.__objclass__.__module__, thing.__objclass__.__name__,
|
|
thing.__name__)
|
|
if inspect.isclass(thing):
|
|
return 'class ' + thing.__name__
|
|
if inspect.isfunction(thing):
|
|
return 'function ' + thing.__name__
|
|
if inspect.ismethod(thing):
|
|
return 'method ' + thing.__name__
|
|
return type(thing).__name__
|
|
|
|
def locate(path, forceload=0):
|
|
"""Locate an object by name or dotted path, importing as necessary."""
|
|
parts = [part for part in path.split('.') if part]
|
|
module, n = None, 0
|
|
while n < len(parts):
|
|
nextmodule = safeimport('.'.join(parts[:n+1]), forceload)
|
|
if nextmodule: module, n = nextmodule, n + 1
|
|
else: break
|
|
if module:
|
|
object = module
|
|
else:
|
|
object = builtins
|
|
for part in parts[n:]:
|
|
try:
|
|
object = getattr(object, part)
|
|
except AttributeError:
|
|
return None
|
|
return object
|
|
|
|
# --------------------------------------- interactive interpreter interface
|
|
|
|
text = TextDoc()
|
|
plaintext = _PlainTextDoc()
|
|
html = HTMLDoc()
|
|
|
|
def resolve(thing, forceload=0):
|
|
"""Given an object or a path to an object, get the object and its name."""
|
|
if isinstance(thing, str):
|
|
object = locate(thing, forceload)
|
|
if not object:
|
|
raise ImportError('no Python documentation found for %r' % thing)
|
|
return object, thing
|
|
else:
|
|
return thing, getattr(thing, '__name__', None)
|
|
|
|
def render_doc(thing, title='Python Library Documentation: %s', forceload=0,
|
|
renderer=None):
|
|
"""Render text documentation, given an object or a path to an object."""
|
|
if renderer is None:
|
|
renderer = text
|
|
object, name = resolve(thing, forceload)
|
|
desc = describe(object)
|
|
module = inspect.getmodule(object)
|
|
if name and '.' in name:
|
|
desc += ' in ' + name[:name.rfind('.')]
|
|
elif module and module is not object:
|
|
desc += ' in module ' + module.__name__
|
|
|
|
if not (inspect.ismodule(object) or
|
|
inspect.isclass(object) or
|
|
inspect.isroutine(object) or
|
|
inspect.isgetsetdescriptor(object) or
|
|
inspect.ismemberdescriptor(object) or
|
|
isinstance(object, property)):
|
|
# If the passed object is a piece of data or an instance,
|
|
# document its available methods instead of its value.
|
|
object = type(object)
|
|
desc += ' object'
|
|
return title % desc + '\n\n' + renderer.document(object, name)
|
|
|
|
def doc(thing, title='Python Library Documentation: %s', forceload=0,
|
|
output=None):
|
|
"""Display text documentation, given an object or a path to an object."""
|
|
try:
|
|
if output is None:
|
|
pager(render_doc(thing, title, forceload))
|
|
else:
|
|
output.write(render_doc(thing, title, forceload, plaintext))
|
|
except (ImportError, ErrorDuringImport) as value:
|
|
print(value)
|
|
|
|
def writedoc(thing, forceload=0):
|
|
"""Write HTML documentation to a file in the current directory."""
|
|
try:
|
|
object, name = resolve(thing, forceload)
|
|
page = html.page(describe(object), html.document(object, name))
|
|
file = open(name + '.html', 'w', encoding='utf-8')
|
|
file.write(page)
|
|
file.close()
|
|
print('wrote', name + '.html')
|
|
except (ImportError, ErrorDuringImport) as value:
|
|
print(value)
|
|
|
|
def writedocs(dir, pkgpath='', done=None):
|
|
"""Write out HTML documentation for all modules in a directory tree."""
|
|
if done is None: done = {}
|
|
for importer, modname, ispkg in pkgutil.walk_packages([dir], pkgpath):
|
|
writedoc(modname)
|
|
return
|
|
|
|
class Helper:
|
|
|
|
# These dictionaries map a topic name to either an alias, or a tuple
|
|
# (label, seealso-items). The "label" is the label of the corresponding
|
|
# section in the .rst file under Doc/ and an index into the dictionary
|
|
# in pydoc_data/topics.py.
|
|
#
|
|
# CAUTION: if you change one of these dictionaries, be sure to adapt the
|
|
# list of needed labels in Doc/tools/sphinxext/pyspecific.py and
|
|
# regenerate the pydoc_data/topics.py file by running
|
|
# make pydoc-topics
|
|
# in Doc/ and copying the output file into the Lib/ directory.
|
|
|
|
keywords = {
|
|
'False': '',
|
|
'None': '',
|
|
'True': '',
|
|
'and': 'BOOLEAN',
|
|
'as': 'with',
|
|
'assert': ('assert', ''),
|
|
'break': ('break', 'while for'),
|
|
'class': ('class', 'CLASSES SPECIALMETHODS'),
|
|
'continue': ('continue', 'while for'),
|
|
'def': ('function', ''),
|
|
'del': ('del', 'BASICMETHODS'),
|
|
'elif': 'if',
|
|
'else': ('else', 'while for'),
|
|
'except': 'try',
|
|
'finally': 'try',
|
|
'for': ('for', 'break continue while'),
|
|
'from': 'import',
|
|
'global': ('global', 'nonlocal NAMESPACES'),
|
|
'if': ('if', 'TRUTHVALUE'),
|
|
'import': ('import', 'MODULES'),
|
|
'in': ('in', 'SEQUENCEMETHODS'),
|
|
'is': 'COMPARISON',
|
|
'lambda': ('lambda', 'FUNCTIONS'),
|
|
'nonlocal': ('nonlocal', 'global NAMESPACES'),
|
|
'not': 'BOOLEAN',
|
|
'or': 'BOOLEAN',
|
|
'pass': ('pass', ''),
|
|
'raise': ('raise', 'EXCEPTIONS'),
|
|
'return': ('return', 'FUNCTIONS'),
|
|
'try': ('try', 'EXCEPTIONS'),
|
|
'while': ('while', 'break continue if TRUTHVALUE'),
|
|
'with': ('with', 'CONTEXTMANAGERS EXCEPTIONS yield'),
|
|
'yield': ('yield', ''),
|
|
}
|
|
# Either add symbols to this dictionary or to the symbols dictionary
|
|
# directly: Whichever is easier. They are merged later.
|
|
_symbols_inverse = {
|
|
'STRINGS' : ("'", "'''", "r'", "b'", '"""', '"', 'r"', 'b"'),
|
|
'OPERATORS' : ('+', '-', '*', '**', '/', '//', '%', '<<', '>>', '&',
|
|
'|', '^', '~', '<', '>', '<=', '>=', '==', '!=', '<>'),
|
|
'COMPARISON' : ('<', '>', '<=', '>=', '==', '!=', '<>'),
|
|
'UNARY' : ('-', '~'),
|
|
'AUGMENTEDASSIGNMENT' : ('+=', '-=', '*=', '/=', '%=', '&=', '|=',
|
|
'^=', '<<=', '>>=', '**=', '//='),
|
|
'BITWISE' : ('<<', '>>', '&', '|', '^', '~'),
|
|
'COMPLEX' : ('j', 'J')
|
|
}
|
|
symbols = {
|
|
'%': 'OPERATORS FORMATTING',
|
|
'**': 'POWER',
|
|
',': 'TUPLES LISTS FUNCTIONS',
|
|
'.': 'ATTRIBUTES FLOAT MODULES OBJECTS',
|
|
'...': 'ELLIPSIS',
|
|
':': 'SLICINGS DICTIONARYLITERALS',
|
|
'@': 'def class',
|
|
'\\': 'STRINGS',
|
|
'_': 'PRIVATENAMES',
|
|
'__': 'PRIVATENAMES SPECIALMETHODS',
|
|
'`': 'BACKQUOTES',
|
|
'(': 'TUPLES FUNCTIONS CALLS',
|
|
')': 'TUPLES FUNCTIONS CALLS',
|
|
'[': 'LISTS SUBSCRIPTS SLICINGS',
|
|
']': 'LISTS SUBSCRIPTS SLICINGS'
|
|
}
|
|
for topic, symbols_ in _symbols_inverse.items():
|
|
for symbol in symbols_:
|
|
topics = symbols.get(symbol, topic)
|
|
if topic not in topics:
|
|
topics = topics + ' ' + topic
|
|
symbols[symbol] = topics
|
|
|
|
topics = {
|
|
'TYPES': ('types', 'STRINGS UNICODE NUMBERS SEQUENCES MAPPINGS '
|
|
'FUNCTIONS CLASSES MODULES FILES inspect'),
|
|
'STRINGS': ('strings', 'str UNICODE SEQUENCES STRINGMETHODS '
|
|
'FORMATTING TYPES'),
|
|
'STRINGMETHODS': ('string-methods', 'STRINGS FORMATTING'),
|
|
'FORMATTING': ('formatstrings', 'OPERATORS'),
|
|
'UNICODE': ('strings', 'encodings unicode SEQUENCES STRINGMETHODS '
|
|
'FORMATTING TYPES'),
|
|
'NUMBERS': ('numbers', 'INTEGER FLOAT COMPLEX TYPES'),
|
|
'INTEGER': ('integers', 'int range'),
|
|
'FLOAT': ('floating', 'float math'),
|
|
'COMPLEX': ('imaginary', 'complex cmath'),
|
|
'SEQUENCES': ('typesseq', 'STRINGMETHODS FORMATTING range LISTS'),
|
|
'MAPPINGS': 'DICTIONARIES',
|
|
'FUNCTIONS': ('typesfunctions', 'def TYPES'),
|
|
'METHODS': ('typesmethods', 'class def CLASSES TYPES'),
|
|
'CODEOBJECTS': ('bltin-code-objects', 'compile FUNCTIONS TYPES'),
|
|
'TYPEOBJECTS': ('bltin-type-objects', 'types TYPES'),
|
|
'FRAMEOBJECTS': 'TYPES',
|
|
'TRACEBACKS': 'TYPES',
|
|
'NONE': ('bltin-null-object', ''),
|
|
'ELLIPSIS': ('bltin-ellipsis-object', 'SLICINGS'),
|
|
'FILES': ('bltin-file-objects', ''),
|
|
'SPECIALATTRIBUTES': ('specialattrs', ''),
|
|
'CLASSES': ('types', 'class SPECIALMETHODS PRIVATENAMES'),
|
|
'MODULES': ('typesmodules', 'import'),
|
|
'PACKAGES': 'import',
|
|
'EXPRESSIONS': ('operator-summary', 'lambda or and not in is BOOLEAN '
|
|
'COMPARISON BITWISE SHIFTING BINARY FORMATTING POWER '
|
|
'UNARY ATTRIBUTES SUBSCRIPTS SLICINGS CALLS TUPLES '
|
|
'LISTS DICTIONARIES'),
|
|
'OPERATORS': 'EXPRESSIONS',
|
|
'PRECEDENCE': 'EXPRESSIONS',
|
|
'OBJECTS': ('objects', 'TYPES'),
|
|
'SPECIALMETHODS': ('specialnames', 'BASICMETHODS ATTRIBUTEMETHODS '
|
|
'CALLABLEMETHODS SEQUENCEMETHODS MAPPINGMETHODS '
|
|
'NUMBERMETHODS CLASSES'),
|
|
'BASICMETHODS': ('customization', 'hash repr str SPECIALMETHODS'),
|
|
'ATTRIBUTEMETHODS': ('attribute-access', 'ATTRIBUTES SPECIALMETHODS'),
|
|
'CALLABLEMETHODS': ('callable-types', 'CALLS SPECIALMETHODS'),
|
|
'SEQUENCEMETHODS': ('sequence-types', 'SEQUENCES SEQUENCEMETHODS '
|
|
'SPECIALMETHODS'),
|
|
'MAPPINGMETHODS': ('sequence-types', 'MAPPINGS SPECIALMETHODS'),
|
|
'NUMBERMETHODS': ('numeric-types', 'NUMBERS AUGMENTEDASSIGNMENT '
|
|
'SPECIALMETHODS'),
|
|
'EXECUTION': ('execmodel', 'NAMESPACES DYNAMICFEATURES EXCEPTIONS'),
|
|
'NAMESPACES': ('naming', 'global nonlocal ASSIGNMENT DELETION DYNAMICFEATURES'),
|
|
'DYNAMICFEATURES': ('dynamic-features', ''),
|
|
'SCOPING': 'NAMESPACES',
|
|
'FRAMES': 'NAMESPACES',
|
|
'EXCEPTIONS': ('exceptions', 'try except finally raise'),
|
|
'CONVERSIONS': ('conversions', ''),
|
|
'IDENTIFIERS': ('identifiers', 'keywords SPECIALIDENTIFIERS'),
|
|
'SPECIALIDENTIFIERS': ('id-classes', ''),
|
|
'PRIVATENAMES': ('atom-identifiers', ''),
|
|
'LITERALS': ('atom-literals', 'STRINGS NUMBERS TUPLELITERALS '
|
|
'LISTLITERALS DICTIONARYLITERALS'),
|
|
'TUPLES': 'SEQUENCES',
|
|
'TUPLELITERALS': ('exprlists', 'TUPLES LITERALS'),
|
|
'LISTS': ('typesseq-mutable', 'LISTLITERALS'),
|
|
'LISTLITERALS': ('lists', 'LISTS LITERALS'),
|
|
'DICTIONARIES': ('typesmapping', 'DICTIONARYLITERALS'),
|
|
'DICTIONARYLITERALS': ('dict', 'DICTIONARIES LITERALS'),
|
|
'ATTRIBUTES': ('attribute-references', 'getattr hasattr setattr ATTRIBUTEMETHODS'),
|
|
'SUBSCRIPTS': ('subscriptions', 'SEQUENCEMETHODS'),
|
|
'SLICINGS': ('slicings', 'SEQUENCEMETHODS'),
|
|
'CALLS': ('calls', 'EXPRESSIONS'),
|
|
'POWER': ('power', 'EXPRESSIONS'),
|
|
'UNARY': ('unary', 'EXPRESSIONS'),
|
|
'BINARY': ('binary', 'EXPRESSIONS'),
|
|
'SHIFTING': ('shifting', 'EXPRESSIONS'),
|
|
'BITWISE': ('bitwise', 'EXPRESSIONS'),
|
|
'COMPARISON': ('comparisons', 'EXPRESSIONS BASICMETHODS'),
|
|
'BOOLEAN': ('booleans', 'EXPRESSIONS TRUTHVALUE'),
|
|
'ASSERTION': 'assert',
|
|
'ASSIGNMENT': ('assignment', 'AUGMENTEDASSIGNMENT'),
|
|
'AUGMENTEDASSIGNMENT': ('augassign', 'NUMBERMETHODS'),
|
|
'DELETION': 'del',
|
|
'RETURNING': 'return',
|
|
'IMPORTING': 'import',
|
|
'CONDITIONAL': 'if',
|
|
'LOOPING': ('compound', 'for while break continue'),
|
|
'TRUTHVALUE': ('truth', 'if while and or not BASICMETHODS'),
|
|
'DEBUGGING': ('debugger', 'pdb'),
|
|
'CONTEXTMANAGERS': ('context-managers', 'with'),
|
|
}
|
|
|
|
def __init__(self, input=None, output=None):
|
|
self._input = input
|
|
self._output = output
|
|
|
|
input = property(lambda self: self._input or sys.stdin)
|
|
output = property(lambda self: self._output or sys.stdout)
|
|
|
|
def __repr__(self):
|
|
if inspect.stack()[1][3] == '?':
|
|
self()
|
|
return ''
|
|
return '<pydoc.Helper instance>'
|
|
|
|
_GoInteractive = object()
|
|
def __call__(self, request=_GoInteractive):
|
|
if request is not self._GoInteractive:
|
|
self.help(request)
|
|
else:
|
|
self.intro()
|
|
self.interact()
|
|
self.output.write('''
|
|
You are now leaving help and returning to the Python interpreter.
|
|
If you want to ask for help on a particular object directly from the
|
|
interpreter, you can type "help(object)". Executing "help('string')"
|
|
has the same effect as typing a particular string at the help> prompt.
|
|
''')
|
|
|
|
def interact(self):
|
|
self.output.write('\n')
|
|
while True:
|
|
try:
|
|
request = self.getline('help> ')
|
|
if not request: break
|
|
except (KeyboardInterrupt, EOFError):
|
|
break
|
|
request = replace(request, '"', '', "'", '').strip()
|
|
if request.lower() in ('q', 'quit'): break
|
|
self.help(request)
|
|
|
|
def getline(self, prompt):
|
|
"""Read one line, using input() when appropriate."""
|
|
if self.input is sys.stdin:
|
|
return input(prompt)
|
|
else:
|
|
self.output.write(prompt)
|
|
self.output.flush()
|
|
return self.input.readline()
|
|
|
|
def help(self, request):
|
|
if type(request) is type(''):
|
|
request = request.strip()
|
|
if request == 'help': self.intro()
|
|
elif request == 'keywords': self.listkeywords()
|
|
elif request == 'symbols': self.listsymbols()
|
|
elif request == 'topics': self.listtopics()
|
|
elif request == 'modules': self.listmodules()
|
|
elif request[:8] == 'modules ':
|
|
self.listmodules(request.split()[1])
|
|
elif request in self.symbols: self.showsymbol(request)
|
|
elif request in ['True', 'False', 'None']:
|
|
# special case these keywords since they are objects too
|
|
doc(eval(request), 'Help on %s:')
|
|
elif request in self.keywords: self.showtopic(request)
|
|
elif request in self.topics: self.showtopic(request)
|
|
elif request: doc(request, 'Help on %s:', output=self._output)
|
|
elif isinstance(request, Helper): self()
|
|
else: doc(request, 'Help on %s:', output=self._output)
|
|
self.output.write('\n')
|
|
|
|
def intro(self):
|
|
self.output.write('''
|
|
Welcome to Python %s! This is the online help utility.
|
|
|
|
If this is your first time using Python, you should definitely check out
|
|
the tutorial on the Internet at http://docs.python.org/tutorial/.
|
|
|
|
Enter the name of any module, keyword, or topic to get help on writing
|
|
Python programs and using Python modules. To quit this help utility and
|
|
return to the interpreter, just type "quit".
|
|
|
|
To get a list of available modules, keywords, or topics, type "modules",
|
|
"keywords", or "topics". Each module also comes with a one-line summary
|
|
of what it does; to list the modules whose summaries contain a given word
|
|
such as "spam", type "modules spam".
|
|
''' % sys.version[:3])
|
|
|
|
def list(self, items, columns=4, width=80):
|
|
items = list(sorted(items))
|
|
colw = width // columns
|
|
rows = (len(items) + columns - 1) // columns
|
|
for row in range(rows):
|
|
for col in range(columns):
|
|
i = col * rows + row
|
|
if i < len(items):
|
|
self.output.write(items[i])
|
|
if col < columns - 1:
|
|
self.output.write(' ' + ' ' * (colw - 1 - len(items[i])))
|
|
self.output.write('\n')
|
|
|
|
def listkeywords(self):
|
|
self.output.write('''
|
|
Here is a list of the Python keywords. Enter any keyword to get more help.
|
|
|
|
''')
|
|
self.list(self.keywords.keys())
|
|
|
|
def listsymbols(self):
|
|
self.output.write('''
|
|
Here is a list of the punctuation symbols which Python assigns special meaning
|
|
to. Enter any symbol to get more help.
|
|
|
|
''')
|
|
self.list(self.symbols.keys())
|
|
|
|
def listtopics(self):
|
|
self.output.write('''
|
|
Here is a list of available topics. Enter any topic name to get more help.
|
|
|
|
''')
|
|
self.list(self.topics.keys())
|
|
|
|
def showtopic(self, topic, more_xrefs=''):
|
|
try:
|
|
import pydoc_data.topics
|
|
except ImportError:
|
|
self.output.write('''
|
|
Sorry, topic and keyword documentation is not available because the
|
|
module "pydoc_data.topics" could not be found.
|
|
''')
|
|
return
|
|
target = self.topics.get(topic, self.keywords.get(topic))
|
|
if not target:
|
|
self.output.write('no documentation found for %s\n' % repr(topic))
|
|
return
|
|
if type(target) is type(''):
|
|
return self.showtopic(target, more_xrefs)
|
|
|
|
label, xrefs = target
|
|
try:
|
|
doc = pydoc_data.topics.topics[label]
|
|
except KeyError:
|
|
self.output.write('no documentation found for %s\n' % repr(topic))
|
|
return
|
|
pager(doc.strip() + '\n')
|
|
if more_xrefs:
|
|
xrefs = (xrefs or '') + ' ' + more_xrefs
|
|
if xrefs:
|
|
import formatter
|
|
buffer = io.StringIO()
|
|
formatter.DumbWriter(buffer).send_flowing_data(
|
|
'Related help topics: ' + ', '.join(xrefs.split()) + '\n')
|
|
self.output.write('\n%s\n' % buffer.getvalue())
|
|
|
|
def _gettopic(self, topic, more_xrefs=''):
|
|
"""Return unbuffered tuple of (topic, xrefs).
|
|
|
|
If an error occurs here, the exception is caught and displayed by
|
|
the url handler.
|
|
|
|
This function duplicates the showtopic method but returns its
|
|
result directly so it can be formatted for display in an html page.
|
|
"""
|
|
try:
|
|
import pydoc_data.topics
|
|
except ImportError:
|
|
return('''
|
|
Sorry, topic and keyword documentation is not available because the
|
|
module "pydoc_data.topics" could not be found.
|
|
''' , '')
|
|
target = self.topics.get(topic, self.keywords.get(topic))
|
|
if not target:
|
|
raise ValueError('could not find topic')
|
|
if isinstance(target, str):
|
|
return self._gettopic(target, more_xrefs)
|
|
label, xrefs = target
|
|
doc = pydoc_data.topics.topics[label]
|
|
if more_xrefs:
|
|
xrefs = (xrefs or '') + ' ' + more_xrefs
|
|
return doc, xrefs
|
|
|
|
def showsymbol(self, symbol):
|
|
target = self.symbols[symbol]
|
|
topic, _, xrefs = target.partition(' ')
|
|
self.showtopic(topic, xrefs)
|
|
|
|
def listmodules(self, key=''):
|
|
if key:
|
|
self.output.write('''
|
|
Here is a list of matching modules. Enter any module name to get more help.
|
|
|
|
''')
|
|
apropos(key)
|
|
else:
|
|
self.output.write('''
|
|
Please wait a moment while I gather a list of all available modules...
|
|
|
|
''')
|
|
modules = {}
|
|
def callback(path, modname, desc, modules=modules):
|
|
if modname and modname[-9:] == '.__init__':
|
|
modname = modname[:-9] + ' (package)'
|
|
if modname.find('.') < 0:
|
|
modules[modname] = 1
|
|
def onerror(modname):
|
|
callback(None, modname, None)
|
|
ModuleScanner().run(callback, onerror=onerror)
|
|
self.list(modules.keys())
|
|
self.output.write('''
|
|
Enter any module name to get more help. Or, type "modules spam" to search
|
|
for modules whose descriptions contain the word "spam".
|
|
''')
|
|
|
|
help = Helper()
|
|
|
|
class Scanner:
|
|
"""A generic tree iterator."""
|
|
def __init__(self, roots, children, descendp):
|
|
self.roots = roots[:]
|
|
self.state = []
|
|
self.children = children
|
|
self.descendp = descendp
|
|
|
|
def next(self):
|
|
if not self.state:
|
|
if not self.roots:
|
|
return None
|
|
root = self.roots.pop(0)
|
|
self.state = [(root, self.children(root))]
|
|
node, children = self.state[-1]
|
|
if not children:
|
|
self.state.pop()
|
|
return self.next()
|
|
child = children.pop(0)
|
|
if self.descendp(child):
|
|
self.state.append((child, self.children(child)))
|
|
return child
|
|
|
|
|
|
class ModuleScanner:
|
|
"""An interruptible scanner that searches module synopses."""
|
|
|
|
def run(self, callback, key=None, completer=None, onerror=None):
|
|
if key: key = key.lower()
|
|
self.quit = False
|
|
seen = {}
|
|
|
|
for modname in sys.builtin_module_names:
|
|
if modname != '__main__':
|
|
seen[modname] = 1
|
|
if key is None:
|
|
callback(None, modname, '')
|
|
else:
|
|
name = __import__(modname).__doc__ or ''
|
|
desc = name.split('\n')[0]
|
|
name = modname + ' - ' + desc
|
|
if name.lower().find(key) >= 0:
|
|
callback(None, modname, desc)
|
|
|
|
for importer, modname, ispkg in pkgutil.walk_packages(onerror=onerror):
|
|
if self.quit:
|
|
break
|
|
|
|
# XXX Skipping this file is a workaround for a bug
|
|
# that causes python to crash with a segfault.
|
|
# http://bugs.python.org/issue9319
|
|
#
|
|
# TODO Remove this once the bug is fixed.
|
|
if modname in {'test.badsyntax_pep3120', 'badsyntax_pep3120'}:
|
|
continue
|
|
|
|
if key is None:
|
|
callback(None, modname, '')
|
|
else:
|
|
try:
|
|
loader = importer.find_module(modname)
|
|
except SyntaxError:
|
|
# raised by tests for bad coding cookies or BOM
|
|
continue
|
|
if hasattr(loader, 'get_source'):
|
|
try:
|
|
source = loader.get_source(modname)
|
|
except UnicodeDecodeError:
|
|
if onerror:
|
|
onerror(modname)
|
|
continue
|
|
desc = source_synopsis(io.StringIO(source)) or ''
|
|
if hasattr(loader, 'get_filename'):
|
|
path = loader.get_filename(modname)
|
|
else:
|
|
path = None
|
|
else:
|
|
try:
|
|
module = loader.load_module(modname)
|
|
except ImportError:
|
|
if onerror:
|
|
onerror(modname)
|
|
continue
|
|
desc = (module.__doc__ or '').splitlines()[0]
|
|
path = getattr(module,'__file__',None)
|
|
name = modname + ' - ' + desc
|
|
if name.lower().find(key) >= 0:
|
|
callback(path, modname, desc)
|
|
|
|
if completer:
|
|
completer()
|
|
|
|
def apropos(key):
|
|
"""Print all the one-line module summaries that contain a substring."""
|
|
def callback(path, modname, desc):
|
|
if modname[-9:] == '.__init__':
|
|
modname = modname[:-9] + ' (package)'
|
|
print(modname, desc and '- ' + desc)
|
|
def onerror(modname):
|
|
pass
|
|
with warnings.catch_warnings():
|
|
warnings.filterwarnings('ignore') # ignore problems during import
|
|
ModuleScanner().run(callback, key, onerror=onerror)
|
|
|
|
# --------------------------------------- enhanced Web browser interface
|
|
|
|
def _start_server(urlhandler, port):
|
|
"""Start an HTTP server thread on a specific port.
|
|
|
|
Start an HTML/text server thread, so HTML or text documents can be
|
|
browsed dynamically and interactively with a Web browser. Example use:
|
|
|
|
>>> import time
|
|
>>> import pydoc
|
|
|
|
Define a URL handler. To determine what the client is asking
|
|
for, check the URL and content_type.
|
|
|
|
Then get or generate some text or HTML code and return it.
|
|
|
|
>>> def my_url_handler(url, content_type):
|
|
... text = 'the URL sent was: (%s, %s)' % (url, content_type)
|
|
... return text
|
|
|
|
Start server thread on port 0.
|
|
If you use port 0, the server will pick a random port number.
|
|
You can then use serverthread.port to get the port number.
|
|
|
|
>>> port = 0
|
|
>>> serverthread = pydoc._start_server(my_url_handler, port)
|
|
|
|
Check that the server is really started. If it is, open browser
|
|
and get first page. Use serverthread.url as the starting page.
|
|
|
|
>>> if serverthread.serving:
|
|
... import webbrowser
|
|
|
|
The next two lines are commented out so a browser doesn't open if
|
|
doctest is run on this module.
|
|
|
|
#... webbrowser.open(serverthread.url)
|
|
#True
|
|
|
|
Let the server do its thing. We just need to monitor its status.
|
|
Use time.sleep so the loop doesn't hog the CPU.
|
|
|
|
>>> starttime = time.time()
|
|
>>> timeout = 1 #seconds
|
|
|
|
This is a short timeout for testing purposes.
|
|
|
|
>>> while serverthread.serving:
|
|
... time.sleep(.01)
|
|
... if serverthread.serving and time.time() - starttime > timeout:
|
|
... serverthread.stop()
|
|
... break
|
|
|
|
Print any errors that may have occurred.
|
|
|
|
>>> print(serverthread.error)
|
|
None
|
|
"""
|
|
import http.server
|
|
import email.message
|
|
import select
|
|
import threading
|
|
|
|
class DocHandler(http.server.BaseHTTPRequestHandler):
|
|
|
|
def do_GET(self):
|
|
"""Process a request from an HTML browser.
|
|
|
|
The URL received is in self.path.
|
|
Get an HTML page from self.urlhandler and send it.
|
|
"""
|
|
if self.path.endswith('.css'):
|
|
content_type = 'text/css'
|
|
else:
|
|
content_type = 'text/html'
|
|
self.send_response(200)
|
|
self.send_header('Content-Type', '%s; charset=UTF-8' % content_type)
|
|
self.end_headers()
|
|
self.wfile.write(self.urlhandler(
|
|
self.path, content_type).encode('utf-8'))
|
|
|
|
def log_message(self, *args):
|
|
# Don't log messages.
|
|
pass
|
|
|
|
class DocServer(http.server.HTTPServer):
|
|
|
|
def __init__(self, port, callback):
|
|
self.host = (sys.platform == 'mac') and '127.0.0.1' or 'localhost'
|
|
self.address = ('', port)
|
|
self.callback = callback
|
|
self.base.__init__(self, self.address, self.handler)
|
|
self.quit = False
|
|
|
|
def serve_until_quit(self):
|
|
while not self.quit:
|
|
rd, wr, ex = select.select([self.socket.fileno()], [], [], 1)
|
|
if rd:
|
|
self.handle_request()
|
|
self.server_close()
|
|
|
|
def server_activate(self):
|
|
self.base.server_activate(self)
|
|
if self.callback:
|
|
self.callback(self)
|
|
|
|
class ServerThread(threading.Thread):
|
|
|
|
def __init__(self, urlhandler, port):
|
|
self.urlhandler = urlhandler
|
|
self.port = int(port)
|
|
threading.Thread.__init__(self)
|
|
self.serving = False
|
|
self.error = None
|
|
|
|
def run(self):
|
|
"""Start the server."""
|
|
try:
|
|
DocServer.base = http.server.HTTPServer
|
|
DocServer.handler = DocHandler
|
|
DocHandler.MessageClass = email.message.Message
|
|
DocHandler.urlhandler = staticmethod(self.urlhandler)
|
|
docsvr = DocServer(self.port, self.ready)
|
|
self.docserver = docsvr
|
|
docsvr.serve_until_quit()
|
|
except Exception as e:
|
|
self.error = e
|
|
|
|
def ready(self, server):
|
|
self.serving = True
|
|
self.host = server.host
|
|
self.port = server.server_port
|
|
self.url = 'http://%s:%d/' % (self.host, self.port)
|
|
|
|
def stop(self):
|
|
"""Stop the server and this thread nicely"""
|
|
self.docserver.quit = True
|
|
self.serving = False
|
|
self.url = None
|
|
|
|
thread = ServerThread(urlhandler, port)
|
|
thread.start()
|
|
# Wait until thread.serving is True to make sure we are
|
|
# really up before returning.
|
|
while not thread.error and not thread.serving:
|
|
time.sleep(.01)
|
|
return thread
|
|
|
|
|
|
def _url_handler(url, content_type="text/html"):
|
|
"""The pydoc url handler for use with the pydoc server.
|
|
|
|
If the content_type is 'text/css', the _pydoc.css style
|
|
sheet is read and returned if it exits.
|
|
|
|
If the content_type is 'text/html', then the result of
|
|
get_html_page(url) is returned.
|
|
"""
|
|
class _HTMLDoc(HTMLDoc):
|
|
|
|
def page(self, title, contents):
|
|
"""Format an HTML page."""
|
|
css_path = "pydoc_data/_pydoc.css"
|
|
css_link = (
|
|
'<link rel="stylesheet" type="text/css" href="%s">' %
|
|
css_path)
|
|
return '''\
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
|
<html><head><title>Pydoc: %s</title>
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
%s</head><body bgcolor="#f0f0f8">%s<div style="clear:both;padding-top:.5em;">%s</div>
|
|
</body></html>''' % (title, css_link, html_navbar(), contents)
|
|
|
|
def filelink(self, url, path):
|
|
return '<a href="getfile?key=%s">%s</a>' % (url, path)
|
|
|
|
|
|
html = _HTMLDoc()
|
|
|
|
def html_navbar():
|
|
version = html.escape("%s [%s, %s]" % (platform.python_version(),
|
|
platform.python_build()[0],
|
|
platform.python_compiler()))
|
|
return """
|
|
<div style='float:left'>
|
|
Python %s<br>%s
|
|
</div>
|
|
<div style='float:right'>
|
|
<div style='text-align:center'>
|
|
<a href="index.html">Module Index</a>
|
|
: <a href="topics.html">Topics</a>
|
|
: <a href="keywords.html">Keywords</a>
|
|
</div>
|
|
<div>
|
|
<form action="get" style='display:inline;'>
|
|
<input type=text name=key size=15>
|
|
<input type=submit value="Get">
|
|
</form>
|
|
<form action="search" style='display:inline;'>
|
|
<input type=text name=key size=15>
|
|
<input type=submit value="Search">
|
|
</form>
|
|
</div>
|
|
</div>
|
|
""" % (version, html.escape(platform.platform(terse=True)))
|
|
|
|
def html_index():
|
|
"""Module Index page."""
|
|
|
|
def bltinlink(name):
|
|
return '<a href="%s.html">%s</a>' % (name, name)
|
|
|
|
heading = html.heading(
|
|
'<big><big><strong>Index of Modules</strong></big></big>',
|
|
'#ffffff', '#7799ee')
|
|
names = [name for name in sys.builtin_module_names
|
|
if name != '__main__']
|
|
contents = html.multicolumn(names, bltinlink)
|
|
contents = [heading, '<p>' + html.bigsection(
|
|
'Built-in Modules', '#ffffff', '#ee77aa', contents)]
|
|
|
|
seen = {}
|
|
for dir in sys.path:
|
|
contents.append(html.index(dir, seen))
|
|
|
|
contents.append(
|
|
'<p align=right><font color="#909090" face="helvetica,'
|
|
'arial"><strong>pydoc</strong> by Ka-Ping Yee'
|
|
'<ping@lfw.org></font>')
|
|
return 'Index of Modules', ''.join(contents)
|
|
|
|
def html_search(key):
|
|
"""Search results page."""
|
|
# scan for modules
|
|
search_result = []
|
|
|
|
def callback(path, modname, desc):
|
|
if modname[-9:] == '.__init__':
|
|
modname = modname[:-9] + ' (package)'
|
|
search_result.append((modname, desc and '- ' + desc))
|
|
|
|
with warnings.catch_warnings():
|
|
warnings.filterwarnings('ignore') # ignore problems during import
|
|
ModuleScanner().run(callback, key)
|
|
|
|
# format page
|
|
def bltinlink(name):
|
|
return '<a href="%s.html">%s</a>' % (name, name)
|
|
|
|
results = []
|
|
heading = html.heading(
|
|
'<big><big><strong>Search Results</strong></big></big>',
|
|
'#ffffff', '#7799ee')
|
|
for name, desc in search_result:
|
|
results.append(bltinlink(name) + desc)
|
|
contents = heading + html.bigsection(
|
|
'key = %s' % key, '#ffffff', '#ee77aa', '<br>'.join(results))
|
|
return 'Search Results', contents
|
|
|
|
def html_getfile(path):
|
|
"""Get and display a source file listing safely."""
|
|
path = path.replace('%20', ' ')
|
|
with tokenize.open(path) as fp:
|
|
lines = html.escape(fp.read())
|
|
body = '<pre>%s</pre>' % lines
|
|
heading = html.heading(
|
|
'<big><big><strong>File Listing</strong></big></big>',
|
|
'#ffffff', '#7799ee')
|
|
contents = heading + html.bigsection(
|
|
'File: %s' % path, '#ffffff', '#ee77aa', body)
|
|
return 'getfile %s' % path, contents
|
|
|
|
def html_topics():
|
|
"""Index of topic texts available."""
|
|
|
|
def bltinlink(name):
|
|
return '<a href="topic?key=%s">%s</a>' % (name, name)
|
|
|
|
heading = html.heading(
|
|
'<big><big><strong>INDEX</strong></big></big>',
|
|
'#ffffff', '#7799ee')
|
|
names = sorted(Helper.topics.keys())
|
|
|
|
contents = html.multicolumn(names, bltinlink)
|
|
contents = heading + html.bigsection(
|
|
'Topics', '#ffffff', '#ee77aa', contents)
|
|
return 'Topics', contents
|
|
|
|
def html_keywords():
|
|
"""Index of keywords."""
|
|
heading = html.heading(
|
|
'<big><big><strong>INDEX</strong></big></big>',
|
|
'#ffffff', '#7799ee')
|
|
names = sorted(Helper.keywords.keys())
|
|
|
|
def bltinlink(name):
|
|
return '<a href="topic?key=%s">%s</a>' % (name, name)
|
|
|
|
contents = html.multicolumn(names, bltinlink)
|
|
contents = heading + html.bigsection(
|
|
'Keywords', '#ffffff', '#ee77aa', contents)
|
|
return 'Keywords', contents
|
|
|
|
def html_topicpage(topic):
|
|
"""Topic or keyword help page."""
|
|
buf = io.StringIO()
|
|
htmlhelp = Helper(buf, buf)
|
|
contents, xrefs = htmlhelp._gettopic(topic)
|
|
if topic in htmlhelp.keywords:
|
|
title = 'KEYWORD'
|
|
else:
|
|
title = 'TOPIC'
|
|
heading = html.heading(
|
|
'<big><big><strong>%s</strong></big></big>' % title,
|
|
'#ffffff', '#7799ee')
|
|
contents = '<pre>%s</pre>' % html.markup(contents)
|
|
contents = html.bigsection(topic , '#ffffff','#ee77aa', contents)
|
|
if xrefs:
|
|
xrefs = sorted(xrefs.split())
|
|
|
|
def bltinlink(name):
|
|
return '<a href="topic?key=%s">%s</a>' % (name, name)
|
|
|
|
xrefs = html.multicolumn(xrefs, bltinlink)
|
|
xrefs = html.section('Related help topics: ',
|
|
'#ffffff', '#ee77aa', xrefs)
|
|
return ('%s %s' % (title, topic),
|
|
''.join((heading, contents, xrefs)))
|
|
|
|
def html_getobj(url):
|
|
obj = locate(url, forceload=1)
|
|
if obj is None and url != 'None':
|
|
raise ValueError('could not find object')
|
|
title = describe(obj)
|
|
content = html.document(obj, url)
|
|
return title, content
|
|
|
|
def html_error(url, exc):
|
|
heading = html.heading(
|
|
'<big><big><strong>Error</strong></big></big>',
|
|
'#ffffff', '#7799ee')
|
|
contents = '<br>'.join(html.escape(line) for line in
|
|
format_exception_only(type(exc), exc))
|
|
contents = heading + html.bigsection(url, '#ffffff', '#bb0000',
|
|
contents)
|
|
return "Error - %s" % url, contents
|
|
|
|
def get_html_page(url):
|
|
"""Generate an HTML page for url."""
|
|
complete_url = url
|
|
if url.endswith('.html'):
|
|
url = url[:-5]
|
|
try:
|
|
if url in ("", "index"):
|
|
title, content = html_index()
|
|
elif url == "topics":
|
|
title, content = html_topics()
|
|
elif url == "keywords":
|
|
title, content = html_keywords()
|
|
elif '=' in url:
|
|
op, _, url = url.partition('=')
|
|
if op == "search?key":
|
|
title, content = html_search(url)
|
|
elif op == "getfile?key":
|
|
title, content = html_getfile(url)
|
|
elif op == "topic?key":
|
|
# try topics first, then objects.
|
|
try:
|
|
title, content = html_topicpage(url)
|
|
except ValueError:
|
|
title, content = html_getobj(url)
|
|
elif op == "get?key":
|
|
# try objects first, then topics.
|
|
if url in ("", "index"):
|
|
title, content = html_index()
|
|
else:
|
|
try:
|
|
title, content = html_getobj(url)
|
|
except ValueError:
|
|
title, content = html_topicpage(url)
|
|
else:
|
|
raise ValueError('bad pydoc url')
|
|
else:
|
|
title, content = html_getobj(url)
|
|
except Exception as exc:
|
|
# Catch any errors and display them in an error page.
|
|
title, content = html_error(complete_url, exc)
|
|
return html.page(title, content)
|
|
|
|
if url.startswith('/'):
|
|
url = url[1:]
|
|
if content_type == 'text/css':
|
|
path_here = os.path.dirname(os.path.realpath(__file__))
|
|
css_path = os.path.join(path_here, url)
|
|
with open(css_path) as fp:
|
|
return ''.join(fp.readlines())
|
|
elif content_type == 'text/html':
|
|
return get_html_page(url)
|
|
# Errors outside the url handler are caught by the server.
|
|
raise TypeError('unknown content type %r for url %s' % (content_type, url))
|
|
|
|
|
|
def browse(port=0, *, open_browser=True):
|
|
"""Start the enhanced pydoc Web server and open a Web browser.
|
|
|
|
Use port '0' to start the server on an arbitrary port.
|
|
Set open_browser to False to suppress opening a browser.
|
|
"""
|
|
import webbrowser
|
|
serverthread = _start_server(_url_handler, port)
|
|
if serverthread.error:
|
|
print(serverthread.error)
|
|
return
|
|
if serverthread.serving:
|
|
server_help_msg = 'Server commands: [b]rowser, [q]uit'
|
|
if open_browser:
|
|
webbrowser.open(serverthread.url)
|
|
try:
|
|
print('Server ready at', serverthread.url)
|
|
print(server_help_msg)
|
|
while serverthread.serving:
|
|
cmd = input('server> ')
|
|
cmd = cmd.lower()
|
|
if cmd == 'q':
|
|
break
|
|
elif cmd == 'b':
|
|
webbrowser.open(serverthread.url)
|
|
else:
|
|
print(server_help_msg)
|
|
except (KeyboardInterrupt, EOFError):
|
|
print()
|
|
finally:
|
|
if serverthread.serving:
|
|
serverthread.stop()
|
|
print('Server stopped')
|
|
|
|
|
|
# -------------------------------------------------- command-line interface
|
|
|
|
def ispath(x):
|
|
return isinstance(x, str) and x.find(os.sep) >= 0
|
|
|
|
def cli():
|
|
"""Command-line interface (looks at sys.argv to decide what to do)."""
|
|
import getopt
|
|
class BadUsage(Exception): pass
|
|
|
|
# Scripts don't get the current directory in their path by default
|
|
# unless they are run with the '-m' switch
|
|
if '' not in sys.path:
|
|
scriptdir = os.path.dirname(sys.argv[0])
|
|
if scriptdir in sys.path:
|
|
sys.path.remove(scriptdir)
|
|
sys.path.insert(0, '.')
|
|
|
|
try:
|
|
opts, args = getopt.getopt(sys.argv[1:], 'bk:p:w')
|
|
writing = False
|
|
start_server = False
|
|
open_browser = False
|
|
port = None
|
|
for opt, val in opts:
|
|
if opt == '-b':
|
|
start_server = True
|
|
open_browser = True
|
|
if opt == '-k':
|
|
apropos(val)
|
|
return
|
|
if opt == '-p':
|
|
start_server = True
|
|
port = val
|
|
if opt == '-w':
|
|
writing = True
|
|
|
|
if start_server == True:
|
|
if port == None:
|
|
port = 0
|
|
browse(port, open_browser=open_browser)
|
|
return
|
|
|
|
if not args: raise BadUsage
|
|
for arg in args:
|
|
if ispath(arg) and not os.path.exists(arg):
|
|
print('file %r does not exist' % arg)
|
|
break
|
|
try:
|
|
if ispath(arg) and os.path.isfile(arg):
|
|
arg = importfile(arg)
|
|
if writing:
|
|
if ispath(arg) and os.path.isdir(arg):
|
|
writedocs(arg)
|
|
else:
|
|
writedoc(arg)
|
|
else:
|
|
help.help(arg)
|
|
except ErrorDuringImport as value:
|
|
print(value)
|
|
|
|
except (getopt.error, BadUsage):
|
|
cmd = os.path.splitext(os.path.basename(sys.argv[0]))[0]
|
|
print("""pydoc - the Python documentation tool
|
|
|
|
{cmd} <name> ...
|
|
Show text documentation on something. <name> may be the name of a
|
|
Python keyword, topic, function, module, or package, or a dotted
|
|
reference to a class or function within a module or module in a
|
|
package. If <name> contains a '{sep}', it is used as the path to a
|
|
Python source file to document. If name is 'keywords', 'topics',
|
|
or 'modules', a listing of these things is displayed.
|
|
|
|
{cmd} -k <keyword>
|
|
Search for a keyword in the synopsis lines of all available modules.
|
|
|
|
{cmd} -p <port>
|
|
Start an HTTP server on the given port on the local machine. Port
|
|
number 0 can be used to get an arbitrary unused port.
|
|
|
|
{cmd} -b
|
|
Start an HTTP server on an arbitrary unused port and open a Web browser
|
|
to interactively browse documentation. The -p option can be used with
|
|
the -b option to explicitly specify the server port.
|
|
|
|
{cmd} -w <name> ...
|
|
Write out the HTML documentation for a module to a file in the current
|
|
directory. If <name> contains a '{sep}', it is treated as a filename; if
|
|
it names a directory, documentation is written for all the contents.
|
|
""".format(cmd=cmd, sep=os.sep))
|
|
|
|
if __name__ == '__main__':
|
|
cli()
|