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https://github.com/python/cpython.git
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19878f58fe
I regularly find that pdb sets the breakpoint on the wrong line when I try to set a breakpoint on a function. This fixes the problem somewhat. The real problem is that pdb tries to parse the Python source code to find the first executable line. A better way might be to inspect the code object, or even have a variable in the code object co_firstexecutablelineno, but that's too much work. The patch fixes the problem when the first code line after the def statement contains the start *and* end of a triple-quoted string. The code assumed that the end of a triple-quoted string is not on the same line as the start, and so it would skip to the end of the *next* triple-quoted string.
939 lines
24 KiB
Python
Executable File
939 lines
24 KiB
Python
Executable File
#! /usr/bin/env python
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# pdb.py -- finally, a Python debugger!
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# (See pdb.doc for documentation.)
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import string
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import sys
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import linecache
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import cmd
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import bdb
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import repr
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import os
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import re
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def find_function(funcname, filename):
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cre = re.compile(r'def\s+%s\s*[(]' % funcname)
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try:
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fp = open(filename)
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except IOError:
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return None
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# consumer of this info expects the first line to be 1
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lineno = 1
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answer = None
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while 1:
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line = fp.readline()
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if line == '':
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break
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if cre.match(line):
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answer = funcname, filename, lineno
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break
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lineno = lineno + 1
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fp.close()
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return answer
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# Interaction prompt line will separate file and call info from code
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# text using value of line_prefix string. A newline and arrow may
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# be to your liking. You can set it once pdb is imported using the
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# command "pdb.line_prefix = '\n% '".
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# line_prefix = ': ' # Use this to get the old situation back
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line_prefix = '\n-> ' # Probably a better default
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class Pdb(bdb.Bdb, cmd.Cmd):
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def __init__(self):
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bdb.Bdb.__init__(self)
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cmd.Cmd.__init__(self)
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self.prompt = '(Pdb) '
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self.aliases = {}
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# Try to load readline if it exists
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try:
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import readline
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except ImportError:
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pass
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# Read $HOME/.pdbrc and ./.pdbrc
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self.rcLines = []
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if os.environ.has_key('HOME'):
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envHome = os.environ['HOME']
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try:
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rcFile = open (envHome + "/.pdbrc")
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except IOError:
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pass
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else:
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for line in rcFile.readlines():
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self.rcLines.append (line)
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rcFile.close()
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try:
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rcFile = open ("./.pdbrc")
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except IOError:
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pass
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else:
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for line in rcFile.readlines():
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self.rcLines.append (line)
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rcFile.close()
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def reset(self):
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bdb.Bdb.reset(self)
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self.forget()
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def forget(self):
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self.lineno = None
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self.stack = []
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self.curindex = 0
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self.curframe = None
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def setup(self, f, t):
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self.forget()
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self.stack, self.curindex = self.get_stack(f, t)
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self.curframe = self.stack[self.curindex][0]
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self.execRcLines()
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# Can be executed earlier than 'setup' if desired
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def execRcLines(self):
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if self.rcLines:
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# Make local copy because of recursion
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rcLines = self.rcLines
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# executed only once
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self.rcLines = []
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for line in rcLines:
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line = line[:-1]
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if len (line) > 0 and line[0] != '#':
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self.onecmd (line)
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# Override Bdb methods (except user_call, for now)
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def user_line(self, frame):
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# This function is called when we stop or break at this line
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self.interaction(frame, None)
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def user_return(self, frame, return_value):
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# This function is called when a return trap is set here
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frame.f_locals['__return__'] = return_value
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print '--Return--'
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self.interaction(frame, None)
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def user_exception(self, frame, (exc_type, exc_value, exc_traceback)):
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# This function is called if an exception occurs,
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# but only if we are to stop at or just below this level
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frame.f_locals['__exception__'] = exc_type, exc_value
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if type(exc_type) == type(''):
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exc_type_name = exc_type
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else: exc_type_name = exc_type.__name__
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print exc_type_name + ':', repr.repr(exc_value)
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self.interaction(frame, exc_traceback)
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# General interaction function
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def interaction(self, frame, traceback):
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self.setup(frame, traceback)
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self.print_stack_entry(self.stack[self.curindex])
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self.cmdloop()
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self.forget()
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def default(self, line):
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if line[:1] == '!': line = line[1:]
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locals = self.curframe.f_locals
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globals = self.curframe.f_globals
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try:
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code = compile(line + '\n', '<stdin>', 'single')
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exec code in globals, locals
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except:
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t, v = sys.exc_info()[:2]
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if type(t) == type(''):
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exc_type_name = t
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else: exc_type_name = t.__name__
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print '***', exc_type_name + ':', v
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def precmd(self, line):
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# Handle alias expansion and ';;' separator
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if not line:
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return line
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args = string.split(line)
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while self.aliases.has_key(args[0]):
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line = self.aliases[args[0]]
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ii = 1
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for tmpArg in args[1:]:
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line = string.replace(line, "%" + str(ii),
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tmpArg)
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ii = ii + 1
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line = string.replace(line, "%*",
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string.join(args[1:], ' '))
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args = string.split(line)
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# split into ';;' separated commands
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# unless it's an alias command
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if args[0] != 'alias':
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marker = string.find(line, ';;')
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if marker >= 0:
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# queue up everything after marker
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next = string.lstrip(line[marker+2:])
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self.cmdqueue.append(next)
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line = string.rstrip(line[:marker])
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return line
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# Command definitions, called by cmdloop()
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# The argument is the remaining string on the command line
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# Return true to exit from the command loop
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do_h = cmd.Cmd.do_help
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def do_EOF(self, arg):
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return 0 # Don't die on EOF
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def do_break(self, arg, temporary = 0):
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# break [ ([filename:]lineno | function) [, "condition"] ]
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if not arg:
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if self.breaks: # There's at least one
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print "Num Type Disp Enb Where"
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for bp in bdb.Breakpoint.bpbynumber:
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if bp:
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bp.bpprint()
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return
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# parse arguments; comma has lowest precendence
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# and cannot occur in filename
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filename = None
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lineno = None
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cond = None
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comma = string.find(arg, ',')
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if comma > 0:
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# parse stuff after comma: "condition"
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cond = string.lstrip(arg[comma+1:])
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arg = string.rstrip(arg[:comma])
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# parse stuff before comma: [filename:]lineno | function
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colon = string.rfind(arg, ':')
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if colon >= 0:
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filename = string.rstrip(arg[:colon])
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f = self.lookupmodule(filename)
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if not f:
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print '*** ', `filename`,
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print 'not found from sys.path'
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return
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else:
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filename = f
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arg = string.lstrip(arg[colon+1:])
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try:
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lineno = int(arg)
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except ValueError, msg:
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print '*** Bad lineno:', arg
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return
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else:
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# no colon; can be lineno or function
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try:
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lineno = int(arg)
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except ValueError:
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try:
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func = eval(arg,
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self.curframe.f_globals,
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self.curframe.f_locals)
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except:
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func = arg
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try:
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if hasattr(func, 'im_func'):
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func = func.im_func
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code = func.func_code
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lineno = code.co_firstlineno
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filename = code.co_filename
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except:
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# last thing to try
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(ok, filename, ln) = self.lineinfo(arg)
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if not ok:
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print '*** The specified object',
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print `arg`,
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print 'is not a function'
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print ('or was not found '
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'along sys.path.')
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return
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lineno = int(ln)
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if not filename:
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filename = self.defaultFile()
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# Check for reasonable breakpoint
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line = self.checkline(filename, lineno)
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if line:
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# now set the break point
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err = self.set_break(filename, line, temporary, cond)
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if err: print '***', err
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else:
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bp = self.get_breaks(filename, line)[-1]
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print "Breakpoint %d at %s:%d" % (bp.number,
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bp.file,
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bp.line)
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# To be overridden in derived debuggers
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def defaultFile(self):
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# Produce a reasonable default
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filename = self.curframe.f_code.co_filename
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if filename == '<string>' and mainpyfile:
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filename = mainpyfile
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return filename
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do_b = do_break
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def do_tbreak(self, arg):
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self.do_break(arg, 1)
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def lineinfo(self, identifier):
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failed = (None, None, None)
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# Input is identifier, may be in single quotes
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idstring = string.split(identifier, "'")
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if len(idstring) == 1:
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# not in single quotes
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id = string.strip(idstring[0])
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elif len(idstring) == 3:
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# quoted
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id = string.strip(idstring[1])
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else:
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return failed
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if id == '': return failed
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parts = string.split(id, '.')
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# Protection for derived debuggers
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if parts[0] == 'self':
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del parts[0]
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if len(parts) == 0:
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return failed
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# Best first guess at file to look at
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fname = self.defaultFile()
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if len(parts) == 1:
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item = parts[0]
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else:
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# More than one part.
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# First is module, second is method/class
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f = self.lookupmodule(parts[0])
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if f:
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fname = f
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item = parts[1]
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answer = find_function(item, fname)
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return answer or failed
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def checkline(self, filename, lineno):
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"""Return line number of first line at or after input
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argument such that if the input points to a 'def', the
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returned line number is the first
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non-blank/non-comment line to follow. If the input
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points to a blank or comment line, return 0. At end
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of file, also return 0."""
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line = linecache.getline(filename, lineno)
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if not line:
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print 'End of file'
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return 0
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line = string.strip(line)
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# Don't allow setting breakpoint at a blank line
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if ( not line or (line[0] == '#') or
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(line[:3] == '"""') or line[:3] == "'''" ):
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print '*** Blank or comment'
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return 0
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# When a file is read in and a breakpoint is at
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# the 'def' statement, the system stops there at
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# code parse time. We don't want that, so all breakpoints
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# set at 'def' statements are moved one line onward
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if line[:3] == 'def':
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incomment = ''
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while 1:
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lineno = lineno+1
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line = linecache.getline(filename, lineno)
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if not line:
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print 'end of file'
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return 0
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line = string.strip(line)
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if incomment:
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if len(line) < 3: continue
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if (line[-3:] == incomment):
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incomment = ''
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continue
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if not line: continue # Blank line
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if len(line) >= 3:
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if (line[:3] == '"""'
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or line[:3] == "'''"):
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if line[-3:] == line[:3]:
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# one-line string
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continue
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incomment = line[:3]
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continue
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if line[0] != '#': break
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return lineno
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def do_enable(self, arg):
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args = string.split(arg)
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for i in args:
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bp = bdb.Breakpoint.bpbynumber[int(i)]
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if bp:
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bp.enable()
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def do_disable(self, arg):
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args = string.split(arg)
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for i in args:
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bp = bdb.Breakpoint.bpbynumber[int(i)]
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if bp:
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bp.disable()
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def do_condition(self, arg):
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# arg is breakpoint number and condition
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args = string.split(arg, ' ', 1)
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bpnum = int(string.strip(args[0]))
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try:
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cond = args[1]
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except:
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cond = None
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bp = bdb.Breakpoint.bpbynumber[bpnum]
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if bp:
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bp.cond = cond
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if not cond:
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print 'Breakpoint', bpnum,
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print 'is now unconditional.'
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def do_ignore(self,arg):
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# arg is bp number followed by ignore count
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args = string.split(arg)
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bpnum = int(string.strip(args[0]))
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try:
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count = int(string.strip(args[1]))
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except:
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count = 0
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bp = bdb.Breakpoint.bpbynumber[bpnum]
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if bp:
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bp.ignore = count
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if (count > 0):
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reply = 'Will ignore next '
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if (count > 1):
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reply = reply + '%d crossings' % count
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else:
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reply = reply + '1 crossing'
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print reply + ' of breakpoint %d.' % bpnum
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else:
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print 'Will stop next time breakpoint',
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print bpnum, 'is reached.'
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def do_clear(self, arg):
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# Three possibilities, tried in this order:
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# clear -> clear all breaks, ask for confirmation
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# clear file:lineno -> clear all breaks at file:lineno
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# clear bpno bpno ... -> clear breakpoints by number
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if not arg:
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try:
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reply = raw_input('Clear all breaks? ')
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except EOFError:
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reply = 'no'
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reply = string.lower(string.strip(reply))
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if reply in ('y', 'yes'):
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self.clear_all_breaks()
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return
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if ':' in arg:
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# Make sure it works for "clear C:\foo\bar.py:12"
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i = string.rfind(arg, ':')
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filename = arg[:i]
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arg = arg[i+1:]
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try:
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lineno = int(arg)
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except:
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err = "Invalid line number (%s)" % arg
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else:
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err = self.clear_break(filename, lineno)
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if err: print '***', err
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return
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numberlist = string.split(arg)
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for i in numberlist:
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err = self.clear_bpbynumber(i)
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if err:
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print '***', err
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else:
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print 'Deleted breakpoint %s ' % (i,)
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do_cl = do_clear # 'c' is already an abbreviation for 'continue'
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def do_where(self, arg):
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self.print_stack_trace()
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do_w = do_where
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def do_up(self, arg):
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if self.curindex == 0:
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print '*** Oldest frame'
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else:
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self.curindex = self.curindex - 1
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self.curframe = self.stack[self.curindex][0]
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self.print_stack_entry(self.stack[self.curindex])
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self.lineno = None
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do_u = do_up
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def do_down(self, arg):
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if self.curindex + 1 == len(self.stack):
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print '*** Newest frame'
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else:
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self.curindex = self.curindex + 1
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self.curframe = self.stack[self.curindex][0]
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self.print_stack_entry(self.stack[self.curindex])
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self.lineno = None
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do_d = do_down
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def do_step(self, arg):
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self.set_step()
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return 1
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do_s = do_step
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def do_next(self, arg):
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self.set_next(self.curframe)
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return 1
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do_n = do_next
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def do_return(self, arg):
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self.set_return(self.curframe)
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return 1
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do_r = do_return
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def do_continue(self, arg):
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self.set_continue()
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return 1
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do_c = do_cont = do_continue
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def do_quit(self, arg):
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self.set_quit()
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return 1
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do_q = do_quit
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def do_args(self, arg):
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f = self.curframe
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co = f.f_code
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dict = f.f_locals
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n = co.co_argcount
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if co.co_flags & 4: n = n+1
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if co.co_flags & 8: n = n+1
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for i in range(n):
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name = co.co_varnames[i]
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print name, '=',
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if dict.has_key(name): print dict[name]
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else: print "*** undefined ***"
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do_a = do_args
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def do_retval(self, arg):
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if self.curframe.f_locals.has_key('__return__'):
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print self.curframe.f_locals['__return__']
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else:
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print '*** Not yet returned!'
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do_rv = do_retval
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def do_p(self, arg):
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try:
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value = eval(arg, self.curframe.f_globals,
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self.curframe.f_locals)
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except:
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t, v = sys.exc_info()[:2]
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if type(t) == type(''):
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exc_type_name = t
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else: exc_type_name = t.__name__
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print '***', exc_type_name + ':', `v`
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return
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print `value`
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def do_list(self, arg):
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self.lastcmd = 'list'
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last = None
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if arg:
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try:
|
|
x = eval(arg, {}, {})
|
|
if type(x) == type(()):
|
|
first, last = x
|
|
first = int(first)
|
|
last = int(last)
|
|
if last < first:
|
|
# Assume it's a count
|
|
last = first + last
|
|
else:
|
|
first = max(1, int(x) - 5)
|
|
except:
|
|
print '*** Error in argument:', `arg`
|
|
return
|
|
elif self.lineno is None:
|
|
first = max(1, self.curframe.f_lineno - 5)
|
|
else:
|
|
first = self.lineno + 1
|
|
if last == None:
|
|
last = first + 10
|
|
filename = self.curframe.f_code.co_filename
|
|
breaklist = self.get_file_breaks(filename)
|
|
try:
|
|
for lineno in range(first, last+1):
|
|
line = linecache.getline(filename, lineno)
|
|
if not line:
|
|
print '[EOF]'
|
|
break
|
|
else:
|
|
s = string.rjust(`lineno`, 3)
|
|
if len(s) < 4: s = s + ' '
|
|
if lineno in breaklist: s = s + 'B'
|
|
else: s = s + ' '
|
|
if lineno == self.curframe.f_lineno:
|
|
s = s + '->'
|
|
print s + '\t' + line,
|
|
self.lineno = lineno
|
|
except KeyboardInterrupt:
|
|
pass
|
|
do_l = do_list
|
|
|
|
def do_whatis(self, arg):
|
|
try:
|
|
value = eval(arg, self.curframe.f_globals,
|
|
self.curframe.f_locals)
|
|
except:
|
|
t, v = sys.exc_info()[:2]
|
|
if type(t) == type(''):
|
|
exc_type_name = t
|
|
else: exc_type_name = t.__name__
|
|
print '***', exc_type_name + ':', `v`
|
|
return
|
|
code = None
|
|
# Is it a function?
|
|
try: code = value.func_code
|
|
except: pass
|
|
if code:
|
|
print 'Function', code.co_name
|
|
return
|
|
# Is it an instance method?
|
|
try: code = value.im_func.func_code
|
|
except: pass
|
|
if code:
|
|
print 'Method', code.co_name
|
|
return
|
|
# None of the above...
|
|
print type(value)
|
|
|
|
def do_alias(self, arg):
|
|
args = string.split (arg)
|
|
if len(args) == 0:
|
|
keys = self.aliases.keys()
|
|
keys.sort()
|
|
for alias in keys:
|
|
print "%s = %s" % (alias, self.aliases[alias])
|
|
return
|
|
if self.aliases.has_key(args[0]) and len (args) == 1:
|
|
print "%s = %s" % (args[0], self.aliases[args[0]])
|
|
else:
|
|
self.aliases[args[0]] = string.join(args[1:], ' ')
|
|
|
|
def do_unalias(self, arg):
|
|
args = string.split (arg)
|
|
if len(args) == 0: return
|
|
if self.aliases.has_key(args[0]):
|
|
del self.aliases[args[0]]
|
|
|
|
# Print a traceback starting at the top stack frame.
|
|
# The most recently entered frame is printed last;
|
|
# this is different from dbx and gdb, but consistent with
|
|
# the Python interpreter's stack trace.
|
|
# It is also consistent with the up/down commands (which are
|
|
# compatible with dbx and gdb: up moves towards 'main()'
|
|
# and down moves towards the most recent stack frame).
|
|
|
|
def print_stack_trace(self):
|
|
try:
|
|
for frame_lineno in self.stack:
|
|
self.print_stack_entry(frame_lineno)
|
|
except KeyboardInterrupt:
|
|
pass
|
|
|
|
def print_stack_entry(self, frame_lineno, prompt_prefix=line_prefix):
|
|
frame, lineno = frame_lineno
|
|
if frame is self.curframe:
|
|
print '>',
|
|
else:
|
|
print ' ',
|
|
print self.format_stack_entry(frame_lineno, prompt_prefix)
|
|
|
|
|
|
# Help methods (derived from pdb.doc)
|
|
|
|
def help_help(self):
|
|
self.help_h()
|
|
|
|
def help_h(self):
|
|
print """h(elp)
|
|
Without argument, print the list of available commands.
|
|
With a command name as argument, print help about that command
|
|
"help pdb" pipes the full documentation file to the $PAGER
|
|
"help exec" gives help on the ! command"""
|
|
|
|
def help_where(self):
|
|
self.help_w()
|
|
|
|
def help_w(self):
|
|
print """w(here)
|
|
Print a stack trace, with the most recent frame at the bottom.
|
|
An arrow indicates the "current frame", which determines the
|
|
context of most commands."""
|
|
|
|
def help_down(self):
|
|
self.help_d()
|
|
|
|
def help_d(self):
|
|
print """d(own)
|
|
Move the current frame one level down in the stack trace
|
|
(to an older frame)."""
|
|
|
|
def help_up(self):
|
|
self.help_u()
|
|
|
|
def help_u(self):
|
|
print """u(p)
|
|
Move the current frame one level up in the stack trace
|
|
(to a newer frame)."""
|
|
|
|
def help_break(self):
|
|
self.help_b()
|
|
|
|
def help_b(self):
|
|
print """b(reak) ([file:]lineno | function) [, condition]
|
|
With a line number argument, set a break there in the current
|
|
file. With a function name, set a break at first executable line
|
|
of that function. Without argument, list all breaks. If a second
|
|
argument is present, it is a string specifying an expression
|
|
which must evaluate to true before the breakpoint is honored.
|
|
|
|
The line number may be prefixed with a filename and a colon,
|
|
to specify a breakpoint in another file (probably one that
|
|
hasn't been loaded yet). The file is searched for on sys.path;
|
|
the .py suffix may be omitted."""
|
|
|
|
def help_clear(self):
|
|
self.help_cl()
|
|
|
|
def help_cl(self):
|
|
print "cl(ear) filename:lineno"
|
|
print """cl(ear) [bpnumber [bpnumber...]]
|
|
With a space separated list of breakpoint numbers, clear
|
|
those breakpoints. Without argument, clear all breaks (but
|
|
first ask confirmation). With a filename:lineno argument,
|
|
clear all breaks at that line in that file.
|
|
|
|
Note that the argument is different from previous versions of
|
|
the debugger (in python distributions 1.5.1 and before) where
|
|
a linenumber was used instead of either filename:lineno or
|
|
breakpoint numbers."""
|
|
|
|
def help_tbreak(self):
|
|
print """tbreak same arguments as break, but breakpoint is
|
|
removed when first hit."""
|
|
|
|
def help_enable(self):
|
|
print """enable bpnumber [bpnumber ...]
|
|
Enables the breakpoints given as a space separated list of
|
|
bp numbers."""
|
|
|
|
def help_disable(self):
|
|
print """disable bpnumber [bpnumber ...]
|
|
Disables the breakpoints given as a space separated list of
|
|
bp numbers."""
|
|
|
|
def help_ignore(self):
|
|
print """ignore bpnumber count
|
|
Sets the ignore count for the given breakpoint number. A breakpoint
|
|
becomes active when the ignore count is zero. When non-zero, the
|
|
count is decremented each time the breakpoint is reached and the
|
|
breakpoint is not disabled and any associated condition evaluates
|
|
to true."""
|
|
|
|
def help_condition(self):
|
|
print """condition bpnumber str_condition
|
|
str_condition is a string specifying an expression which
|
|
must evaluate to true before the breakpoint is honored.
|
|
If str_condition is absent, any existing condition is removed;
|
|
i.e., the breakpoint is made unconditional."""
|
|
|
|
def help_step(self):
|
|
self.help_s()
|
|
|
|
def help_s(self):
|
|
print """s(tep)
|
|
Execute the current line, stop at the first possible occasion
|
|
(either in a function that is called or in the current function)."""
|
|
|
|
def help_next(self):
|
|
self.help_n()
|
|
|
|
def help_n(self):
|
|
print """n(ext)
|
|
Continue execution until the next line in the current function
|
|
is reached or it returns."""
|
|
|
|
def help_return(self):
|
|
self.help_r()
|
|
|
|
def help_r(self):
|
|
print """r(eturn)
|
|
Continue execution until the current function returns."""
|
|
|
|
def help_continue(self):
|
|
self.help_c()
|
|
|
|
def help_cont(self):
|
|
self.help_c()
|
|
|
|
def help_c(self):
|
|
print """c(ont(inue))
|
|
Continue execution, only stop when a breakpoint is encountered."""
|
|
|
|
def help_list(self):
|
|
self.help_l()
|
|
|
|
def help_l(self):
|
|
print """l(ist) [first [,last]]
|
|
List source code for the current file.
|
|
Without arguments, list 11 lines around the current line
|
|
or continue the previous listing.
|
|
With one argument, list 11 lines starting at that line.
|
|
With two arguments, list the given range;
|
|
if the second argument is less than the first, it is a count."""
|
|
|
|
def help_args(self):
|
|
self.help_a()
|
|
|
|
def help_a(self):
|
|
print """a(rgs)
|
|
Print the arguments of the current function."""
|
|
|
|
def help_p(self):
|
|
print """p expression
|
|
Print the value of the expression."""
|
|
|
|
def help_exec(self):
|
|
print """(!) statement
|
|
Execute the (one-line) statement in the context of
|
|
the current stack frame.
|
|
The exclamation point can be omitted unless the first word
|
|
of the statement resembles a debugger command.
|
|
To assign to a global variable you must always prefix the
|
|
command with a 'global' command, e.g.:
|
|
(Pdb) global list_options; list_options = ['-l']
|
|
(Pdb)"""
|
|
|
|
def help_quit(self):
|
|
self.help_q()
|
|
|
|
def help_q(self):
|
|
print """q(uit) Quit from the debugger.
|
|
The program being executed is aborted."""
|
|
|
|
def help_whatis(self):
|
|
print """whatis arg
|
|
Prints the type of the argument."""
|
|
|
|
def help_EOF(self):
|
|
print """EOF
|
|
Handles the receipt of EOF as a command."""
|
|
|
|
def help_alias(self):
|
|
print """alias [name [command [parameter parameter ...] ]]
|
|
Creates an alias called 'name' the executes 'command'. The command
|
|
must *not* be enclosed in quotes. Replaceable parameters are
|
|
indicated by %1, %2, and so on, while %* is replaced by all the
|
|
parameters. If no command is given, the current alias for name
|
|
is shown. If no name is given, all aliases are listed.
|
|
|
|
Aliases may be nested and can contain anything that can be
|
|
legally typed at the pdb prompt. Note! You *can* override
|
|
internal pdb commands with aliases! Those internal commands
|
|
are then hidden until the alias is removed. Aliasing is recursively
|
|
applied to the first word of the command line; all other words
|
|
in the line are left alone.
|
|
|
|
Some useful aliases (especially when placed in the .pdbrc file) are:
|
|
|
|
#Print instance variables (usage "pi classInst")
|
|
alias pi for k in %1.__dict__.keys(): print "%1.",k,"=",%1.__dict__[k]
|
|
|
|
#Print instance variables in self
|
|
alias ps pi self
|
|
"""
|
|
|
|
def help_unalias(self):
|
|
print """unalias name
|
|
Deletes the specified alias."""
|
|
|
|
def help_pdb(self):
|
|
help()
|
|
|
|
# Helper function for break/clear parsing -- may be overridden
|
|
|
|
def lookupmodule(self, filename):
|
|
root, ext = os.path.splitext(filename)
|
|
if ext == '':
|
|
filename = filename + '.py'
|
|
if os.path.isabs(filename):
|
|
return filename
|
|
for dirname in sys.path:
|
|
while os.path.islink(dirname):
|
|
dirname = os.readlink(dirname)
|
|
fullname = os.path.join(dirname, filename)
|
|
if os.path.exists(fullname):
|
|
return fullname
|
|
return None
|
|
|
|
# Simplified interface
|
|
|
|
def run(statement, globals=None, locals=None):
|
|
Pdb().run(statement, globals, locals)
|
|
|
|
def runeval(expression, globals=None, locals=None):
|
|
return Pdb().runeval(expression, globals, locals)
|
|
|
|
def runctx(statement, globals, locals):
|
|
# B/W compatibility
|
|
run(statement, globals, locals)
|
|
|
|
def runcall(*args):
|
|
return apply(Pdb().runcall, args)
|
|
|
|
def set_trace():
|
|
Pdb().set_trace()
|
|
|
|
# Post-Mortem interface
|
|
|
|
def post_mortem(t):
|
|
p = Pdb()
|
|
p.reset()
|
|
while t.tb_next <> None: t = t.tb_next
|
|
p.interaction(t.tb_frame, t)
|
|
|
|
def pm():
|
|
post_mortem(sys.last_traceback)
|
|
|
|
|
|
# Main program for testing
|
|
|
|
TESTCMD = 'import x; x.main()'
|
|
|
|
def test():
|
|
run(TESTCMD)
|
|
|
|
# print help
|
|
def help():
|
|
for dirname in sys.path:
|
|
fullname = os.path.join(dirname, 'pdb.doc')
|
|
if os.path.exists(fullname):
|
|
sts = os.system('${PAGER-more} '+fullname)
|
|
if sts: print '*** Pager exit status:', sts
|
|
break
|
|
else:
|
|
print 'Sorry, can\'t find the help file "pdb.doc"',
|
|
print 'along the Python search path'
|
|
|
|
mainmodule = ''
|
|
mainpyfile = ''
|
|
|
|
# When invoked as main program, invoke the debugger on a script
|
|
if __name__=='__main__':
|
|
if not sys.argv[1:]:
|
|
print "usage: pdb.py scriptfile [arg] ..."
|
|
sys.exit(2)
|
|
|
|
mainpyfile = filename = sys.argv[1] # Get script filename
|
|
if not os.path.exists(filename):
|
|
print 'Error:', `filename`, 'does not exist'
|
|
sys.exit(1)
|
|
mainmodule = os.path.basename(filename)
|
|
del sys.argv[0] # Hide "pdb.py" from argument list
|
|
|
|
# Insert script directory in front of module search path
|
|
sys.path.insert(0, os.path.dirname(filename))
|
|
|
|
run('execfile(' + `filename` + ')')
|