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7462b64911
This changes the main documentation, doc strings, source code comments, and a couple error messages in the test suite. In some cases the word was removed or edited some other way to fix the grammar.
704 lines
22 KiB
Python
704 lines
22 KiB
Python
"""Calendar printing functions
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Note when comparing these calendars to the ones printed by cal(1): By
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default, these calendars have Monday as the first day of the week, and
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Sunday as the last (the European convention). Use setfirstweekday() to
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set the first day of the week (0=Monday, 6=Sunday)."""
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import sys
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import datetime
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import locale as _locale
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__all__ = ["IllegalMonthError", "IllegalWeekdayError", "setfirstweekday",
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"firstweekday", "isleap", "leapdays", "weekday", "monthrange",
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"monthcalendar", "prmonth", "month", "prcal", "calendar",
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"timegm", "month_name", "month_abbr", "day_name", "day_abbr"]
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# Exception raised for bad input (with string parameter for details)
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error = ValueError
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# Exceptions raised for bad input
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class IllegalMonthError(ValueError):
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def __init__(self, month):
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self.month = month
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def __str__(self):
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return "bad month number %r; must be 1-12" % self.month
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class IllegalWeekdayError(ValueError):
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def __init__(self, weekday):
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self.weekday = weekday
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def __str__(self):
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return "bad weekday number %r; must be 0 (Monday) to 6 (Sunday)" % self.weekday
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# Constants for months referenced later
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January = 1
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February = 2
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# Number of days per month (except for February in leap years)
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mdays = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
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# This module used to have hard-coded lists of day and month names, as
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# English strings. The classes following emulate a read-only version of
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# that, but supply localized names. Note that the values are computed
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# fresh on each call, in case the user changes locale between calls.
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class _localized_month:
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_months = [datetime.date(2001, i+1, 1).strftime for i in range(12)]
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_months.insert(0, lambda x: "")
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def __init__(self, format):
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self.format = format
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def __getitem__(self, i):
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funcs = self._months[i]
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if isinstance(i, slice):
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return [f(self.format) for f in funcs]
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else:
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return funcs(self.format)
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def __len__(self):
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return 13
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class _localized_day:
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# January 1, 2001, was a Monday.
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_days = [datetime.date(2001, 1, i+1).strftime for i in range(7)]
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def __init__(self, format):
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self.format = format
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def __getitem__(self, i):
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funcs = self._days[i]
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if isinstance(i, slice):
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return [f(self.format) for f in funcs]
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else:
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return funcs(self.format)
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def __len__(self):
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return 7
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# Full and abbreviated names of weekdays
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day_name = _localized_day('%A')
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day_abbr = _localized_day('%a')
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# Full and abbreviated names of months (1-based arrays!!!)
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month_name = _localized_month('%B')
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month_abbr = _localized_month('%b')
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# Constants for weekdays
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(MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY) = range(7)
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def isleap(year):
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"""Return True for leap years, False for non-leap years."""
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return year % 4 == 0 and (year % 100 != 0 or year % 400 == 0)
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def leapdays(y1, y2):
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"""Return number of leap years in range [y1, y2).
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Assume y1 <= y2."""
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y1 -= 1
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y2 -= 1
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return (y2//4 - y1//4) - (y2//100 - y1//100) + (y2//400 - y1//400)
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def weekday(year, month, day):
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"""Return weekday (0-6 ~ Mon-Sun) for year (1970-...), month (1-12),
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day (1-31)."""
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return datetime.date(year, month, day).weekday()
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def monthrange(year, month):
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"""Return weekday (0-6 ~ Mon-Sun) and number of days (28-31) for
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year, month."""
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if not 1 <= month <= 12:
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raise IllegalMonthError(month)
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day1 = weekday(year, month, 1)
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ndays = mdays[month] + (month == February and isleap(year))
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return day1, ndays
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class Calendar(object):
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"""
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Base calendar class. This class doesn't do any formatting. It simply
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provides data to subclasses.
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"""
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def __init__(self, firstweekday=0):
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self.firstweekday = firstweekday # 0 = Monday, 6 = Sunday
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def getfirstweekday(self):
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return self._firstweekday % 7
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def setfirstweekday(self, firstweekday):
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self._firstweekday = firstweekday
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firstweekday = property(getfirstweekday, setfirstweekday)
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def iterweekdays(self):
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"""
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Return an iterator for one week of weekday numbers starting with the
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configured first one.
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"""
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for i in range(self.firstweekday, self.firstweekday + 7):
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yield i%7
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def itermonthdates(self, year, month):
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"""
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Return an iterator for one month. The iterator will yield datetime.date
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values and will always iterate through complete weeks, so it will yield
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dates outside the specified month.
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"""
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date = datetime.date(year, month, 1)
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# Go back to the beginning of the week
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days = (date.weekday() - self.firstweekday) % 7
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date -= datetime.timedelta(days=days)
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oneday = datetime.timedelta(days=1)
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while True:
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yield date
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try:
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date += oneday
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except OverflowError:
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# Adding one day could fail after datetime.MAXYEAR
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break
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if date.month != month and date.weekday() == self.firstweekday:
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break
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def itermonthdays2(self, year, month):
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"""
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Like itermonthdates(), but will yield (day number, weekday number)
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tuples. For days outside the specified month the day number is 0.
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"""
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for date in self.itermonthdates(year, month):
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if date.month != month:
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yield (0, date.weekday())
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else:
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yield (date.day, date.weekday())
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def itermonthdays(self, year, month):
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"""
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Like itermonthdates(), but will yield day numbers. For days outside
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the specified month the day number is 0.
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"""
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for date in self.itermonthdates(year, month):
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if date.month != month:
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yield 0
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else:
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yield date.day
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def monthdatescalendar(self, year, month):
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"""
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Return a matrix (list of lists) representing a month's calendar.
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Each row represents a week; week entries are datetime.date values.
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"""
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dates = list(self.itermonthdates(year, month))
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return [ dates[i:i+7] for i in range(0, len(dates), 7) ]
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def monthdays2calendar(self, year, month):
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"""
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Return a matrix representing a month's calendar.
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Each row represents a week; week entries are
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(day number, weekday number) tuples. Day numbers outside this month
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are zero.
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"""
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days = list(self.itermonthdays2(year, month))
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return [ days[i:i+7] for i in range(0, len(days), 7) ]
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def monthdayscalendar(self, year, month):
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"""
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Return a matrix representing a month's calendar.
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Each row represents a week; days outside this month are zero.
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"""
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days = list(self.itermonthdays(year, month))
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return [ days[i:i+7] for i in range(0, len(days), 7) ]
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def yeardatescalendar(self, year, width=3):
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"""
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Return the data for the specified year ready for formatting. The return
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value is a list of month rows. Each month row contains up to width months.
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Each month contains between 4 and 6 weeks and each week contains 1-7
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days. Days are datetime.date objects.
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"""
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months = [
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self.monthdatescalendar(year, i)
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for i in range(January, January+12)
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]
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return [months[i:i+width] for i in range(0, len(months), width) ]
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def yeardays2calendar(self, year, width=3):
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"""
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Return the data for the specified year ready for formatting (similar to
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yeardatescalendar()). Entries in the week lists are
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(day number, weekday number) tuples. Day numbers outside this month are
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zero.
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"""
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months = [
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self.monthdays2calendar(year, i)
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for i in range(January, January+12)
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]
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return [months[i:i+width] for i in range(0, len(months), width) ]
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def yeardayscalendar(self, year, width=3):
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"""
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Return the data for the specified year ready for formatting (similar to
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yeardatescalendar()). Entries in the week lists are day numbers.
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Day numbers outside this month are zero.
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"""
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months = [
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self.monthdayscalendar(year, i)
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for i in range(January, January+12)
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]
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return [months[i:i+width] for i in range(0, len(months), width) ]
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class TextCalendar(Calendar):
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"""
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Subclass of Calendar that outputs a calendar as a simple plain text
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similar to the UNIX program cal.
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"""
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def prweek(self, theweek, width):
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"""
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Print a single week (no newline).
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"""
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print(self.formatweek(theweek, width), end=' ')
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def formatday(self, day, weekday, width):
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"""
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Returns a formatted day.
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"""
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if day == 0:
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s = ''
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else:
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s = '%2i' % day # right-align single-digit days
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return s.center(width)
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def formatweek(self, theweek, width):
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"""
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Returns a single week in a string (no newline).
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"""
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return ' '.join(self.formatday(d, wd, width) for (d, wd) in theweek)
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def formatweekday(self, day, width):
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"""
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Returns a formatted week day name.
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"""
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if width >= 9:
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names = day_name
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else:
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names = day_abbr
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return names[day][:width].center(width)
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def formatweekheader(self, width):
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"""
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Return a header for a week.
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"""
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return ' '.join(self.formatweekday(i, width) for i in self.iterweekdays())
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def formatmonthname(self, theyear, themonth, width, withyear=True):
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"""
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Return a formatted month name.
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"""
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s = month_name[themonth]
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if withyear:
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s = "%s %r" % (s, theyear)
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return s.center(width)
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def prmonth(self, theyear, themonth, w=0, l=0):
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"""
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Print a month's calendar.
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"""
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print(self.formatmonth(theyear, themonth, w, l), end=' ')
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def formatmonth(self, theyear, themonth, w=0, l=0):
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"""
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Return a month's calendar string (multi-line).
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"""
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w = max(2, w)
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l = max(1, l)
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s = self.formatmonthname(theyear, themonth, 7 * (w + 1) - 1)
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s = s.rstrip()
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s += '\n' * l
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s += self.formatweekheader(w).rstrip()
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s += '\n' * l
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for week in self.monthdays2calendar(theyear, themonth):
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s += self.formatweek(week, w).rstrip()
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s += '\n' * l
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return s
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def formatyear(self, theyear, w=2, l=1, c=6, m=3):
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"""
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Returns a year's calendar as a multi-line string.
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"""
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w = max(2, w)
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l = max(1, l)
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c = max(2, c)
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colwidth = (w + 1) * 7 - 1
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v = []
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a = v.append
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a(repr(theyear).center(colwidth*m+c*(m-1)).rstrip())
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a('\n'*l)
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header = self.formatweekheader(w)
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for (i, row) in enumerate(self.yeardays2calendar(theyear, m)):
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# months in this row
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months = range(m*i+1, min(m*(i+1)+1, 13))
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a('\n'*l)
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names = (self.formatmonthname(theyear, k, colwidth, False)
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for k in months)
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a(formatstring(names, colwidth, c).rstrip())
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a('\n'*l)
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headers = (header for k in months)
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a(formatstring(headers, colwidth, c).rstrip())
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a('\n'*l)
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# max number of weeks for this row
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height = max(len(cal) for cal in row)
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for j in range(height):
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weeks = []
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for cal in row:
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if j >= len(cal):
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weeks.append('')
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else:
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weeks.append(self.formatweek(cal[j], w))
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a(formatstring(weeks, colwidth, c).rstrip())
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a('\n' * l)
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return ''.join(v)
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def pryear(self, theyear, w=0, l=0, c=6, m=3):
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"""Print a year's calendar."""
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print(self.formatyear(theyear, w, l, c, m))
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class HTMLCalendar(Calendar):
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"""
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This calendar returns complete HTML pages.
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"""
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# CSS classes for the day <td>s
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cssclasses = ["mon", "tue", "wed", "thu", "fri", "sat", "sun"]
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def formatday(self, day, weekday):
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"""
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Return a day as a table cell.
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"""
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if day == 0:
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return '<td class="noday"> </td>' # day outside month
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else:
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return '<td class="%s">%d</td>' % (self.cssclasses[weekday], day)
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def formatweek(self, theweek):
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"""
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Return a complete week as a table row.
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"""
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s = ''.join(self.formatday(d, wd) for (d, wd) in theweek)
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return '<tr>%s</tr>' % s
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def formatweekday(self, day):
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"""
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Return a weekday name as a table header.
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"""
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return '<th class="%s">%s</th>' % (self.cssclasses[day], day_abbr[day])
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def formatweekheader(self):
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"""
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Return a header for a week as a table row.
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"""
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s = ''.join(self.formatweekday(i) for i in self.iterweekdays())
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return '<tr>%s</tr>' % s
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def formatmonthname(self, theyear, themonth, withyear=True):
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"""
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Return a month name as a table row.
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"""
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if withyear:
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s = '%s %s' % (month_name[themonth], theyear)
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else:
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s = '%s' % month_name[themonth]
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return '<tr><th colspan="7" class="month">%s</th></tr>' % s
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def formatmonth(self, theyear, themonth, withyear=True):
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"""
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Return a formatted month as a table.
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"""
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v = []
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a = v.append
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a('<table border="0" cellpadding="0" cellspacing="0" class="month">')
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a('\n')
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a(self.formatmonthname(theyear, themonth, withyear=withyear))
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a('\n')
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a(self.formatweekheader())
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a('\n')
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for week in self.monthdays2calendar(theyear, themonth):
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a(self.formatweek(week))
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a('\n')
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a('</table>')
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a('\n')
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return ''.join(v)
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def formatyear(self, theyear, width=3):
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"""
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Return a formatted year as a table of tables.
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"""
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v = []
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a = v.append
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width = max(width, 1)
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a('<table border="0" cellpadding="0" cellspacing="0" class="year">')
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a('\n')
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a('<tr><th colspan="%d" class="year">%s</th></tr>' % (width, theyear))
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for i in range(January, January+12, width):
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# months in this row
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months = range(i, min(i+width, 13))
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a('<tr>')
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for m in months:
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a('<td>')
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a(self.formatmonth(theyear, m, withyear=False))
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a('</td>')
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a('</tr>')
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a('</table>')
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return ''.join(v)
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def formatyearpage(self, theyear, width=3, css='calendar.css', encoding=None):
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"""
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Return a formatted year as a complete HTML page.
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"""
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if encoding is None:
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encoding = sys.getdefaultencoding()
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v = []
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a = v.append
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a('<?xml version="1.0" encoding="%s"?>\n' % encoding)
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a('<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">\n')
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a('<html>\n')
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a('<head>\n')
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a('<meta http-equiv="Content-Type" content="text/html; charset=%s" />\n' % encoding)
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if css is not None:
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a('<link rel="stylesheet" type="text/css" href="%s" />\n' % css)
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a('<title>Calendar for %d</title>\n' % theyear)
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a('</head>\n')
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a('<body>\n')
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a(self.formatyear(theyear, width))
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a('</body>\n')
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a('</html>\n')
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return ''.join(v).encode(encoding, "xmlcharrefreplace")
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class different_locale:
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def __init__(self, locale):
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self.locale = locale
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def __enter__(self):
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self.oldlocale = _locale.getlocale(_locale.LC_TIME)
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_locale.setlocale(_locale.LC_TIME, self.locale)
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def __exit__(self, *args):
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_locale.setlocale(_locale.LC_TIME, self.oldlocale)
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class LocaleTextCalendar(TextCalendar):
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"""
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This class can be passed a locale name in the constructor and will return
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month and weekday names in the specified locale. If this locale includes
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an encoding all strings containing month and weekday names will be returned
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as unicode.
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"""
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def __init__(self, firstweekday=0, locale=None):
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TextCalendar.__init__(self, firstweekday)
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if locale is None:
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|
locale = _locale.getdefaultlocale()
|
|
self.locale = locale
|
|
|
|
def formatweekday(self, day, width):
|
|
with different_locale(self.locale):
|
|
if width >= 9:
|
|
names = day_name
|
|
else:
|
|
names = day_abbr
|
|
name = names[day]
|
|
return name[:width].center(width)
|
|
|
|
def formatmonthname(self, theyear, themonth, width, withyear=True):
|
|
with different_locale(self.locale):
|
|
s = month_name[themonth]
|
|
if withyear:
|
|
s = "%s %r" % (s, theyear)
|
|
return s.center(width)
|
|
|
|
|
|
class LocaleHTMLCalendar(HTMLCalendar):
|
|
"""
|
|
This class can be passed a locale name in the constructor and will return
|
|
month and weekday names in the specified locale. If this locale includes
|
|
an encoding all strings containing month and weekday names will be returned
|
|
as unicode.
|
|
"""
|
|
def __init__(self, firstweekday=0, locale=None):
|
|
HTMLCalendar.__init__(self, firstweekday)
|
|
if locale is None:
|
|
locale = _locale.getdefaultlocale()
|
|
self.locale = locale
|
|
|
|
def formatweekday(self, day):
|
|
with different_locale(self.locale):
|
|
s = day_abbr[day]
|
|
return '<th class="%s">%s</th>' % (self.cssclasses[day], s)
|
|
|
|
def formatmonthname(self, theyear, themonth, withyear=True):
|
|
with different_locale(self.locale):
|
|
s = month_name[themonth]
|
|
if withyear:
|
|
s = '%s %s' % (s, theyear)
|
|
return '<tr><th colspan="7" class="month">%s</th></tr>' % s
|
|
|
|
|
|
# Support for old module level interface
|
|
c = TextCalendar()
|
|
|
|
firstweekday = c.getfirstweekday
|
|
|
|
def setfirstweekday(firstweekday):
|
|
if not MONDAY <= firstweekday <= SUNDAY:
|
|
raise IllegalWeekdayError(firstweekday)
|
|
c.firstweekday = firstweekday
|
|
|
|
monthcalendar = c.monthdayscalendar
|
|
prweek = c.prweek
|
|
week = c.formatweek
|
|
weekheader = c.formatweekheader
|
|
prmonth = c.prmonth
|
|
month = c.formatmonth
|
|
calendar = c.formatyear
|
|
prcal = c.pryear
|
|
|
|
|
|
# Spacing of month columns for multi-column year calendar
|
|
_colwidth = 7*3 - 1 # Amount printed by prweek()
|
|
_spacing = 6 # Number of spaces between columns
|
|
|
|
|
|
def format(cols, colwidth=_colwidth, spacing=_spacing):
|
|
"""Prints multi-column formatting for year calendars"""
|
|
print(formatstring(cols, colwidth, spacing))
|
|
|
|
|
|
def formatstring(cols, colwidth=_colwidth, spacing=_spacing):
|
|
"""Returns a string formatted from n strings, centered within n columns."""
|
|
spacing *= ' '
|
|
return spacing.join(c.center(colwidth) for c in cols)
|
|
|
|
|
|
EPOCH = 1970
|
|
_EPOCH_ORD = datetime.date(EPOCH, 1, 1).toordinal()
|
|
|
|
|
|
def timegm(tuple):
|
|
"""Unrelated but handy function to calculate Unix timestamp from GMT."""
|
|
year, month, day, hour, minute, second = tuple[:6]
|
|
days = datetime.date(year, month, 1).toordinal() - _EPOCH_ORD + day - 1
|
|
hours = days*24 + hour
|
|
minutes = hours*60 + minute
|
|
seconds = minutes*60 + second
|
|
return seconds
|
|
|
|
|
|
def main(args):
|
|
import optparse
|
|
parser = optparse.OptionParser(usage="usage: %prog [options] [year [month]]")
|
|
parser.add_option(
|
|
"-w", "--width",
|
|
dest="width", type="int", default=2,
|
|
help="width of date column (default 2, text only)"
|
|
)
|
|
parser.add_option(
|
|
"-l", "--lines",
|
|
dest="lines", type="int", default=1,
|
|
help="number of lines for each week (default 1, text only)"
|
|
)
|
|
parser.add_option(
|
|
"-s", "--spacing",
|
|
dest="spacing", type="int", default=6,
|
|
help="spacing between months (default 6, text only)"
|
|
)
|
|
parser.add_option(
|
|
"-m", "--months",
|
|
dest="months", type="int", default=3,
|
|
help="months per row (default 3, text only)"
|
|
)
|
|
parser.add_option(
|
|
"-c", "--css",
|
|
dest="css", default="calendar.css",
|
|
help="CSS to use for page (html only)"
|
|
)
|
|
parser.add_option(
|
|
"-L", "--locale",
|
|
dest="locale", default=None,
|
|
help="locale to be used from month and weekday names"
|
|
)
|
|
parser.add_option(
|
|
"-e", "--encoding",
|
|
dest="encoding", default=None,
|
|
help="Encoding to use for output."
|
|
)
|
|
parser.add_option(
|
|
"-t", "--type",
|
|
dest="type", default="text",
|
|
choices=("text", "html"),
|
|
help="output type (text or html)"
|
|
)
|
|
|
|
(options, args) = parser.parse_args(args)
|
|
|
|
if options.locale and not options.encoding:
|
|
parser.error("if --locale is specified --encoding is required")
|
|
sys.exit(1)
|
|
|
|
locale = options.locale, options.encoding
|
|
|
|
if options.type == "html":
|
|
if options.locale:
|
|
cal = LocaleHTMLCalendar(locale=locale)
|
|
else:
|
|
cal = HTMLCalendar()
|
|
encoding = options.encoding
|
|
if encoding is None:
|
|
encoding = sys.getdefaultencoding()
|
|
optdict = dict(encoding=encoding, css=options.css)
|
|
write = sys.stdout.buffer.write
|
|
if len(args) == 1:
|
|
write(cal.formatyearpage(datetime.date.today().year, **optdict))
|
|
elif len(args) == 2:
|
|
write(cal.formatyearpage(int(args[1]), **optdict))
|
|
else:
|
|
parser.error("incorrect number of arguments")
|
|
sys.exit(1)
|
|
else:
|
|
if options.locale:
|
|
cal = LocaleTextCalendar(locale=locale)
|
|
else:
|
|
cal = TextCalendar()
|
|
optdict = dict(w=options.width, l=options.lines)
|
|
if len(args) != 3:
|
|
optdict["c"] = options.spacing
|
|
optdict["m"] = options.months
|
|
if len(args) == 1:
|
|
result = cal.formatyear(datetime.date.today().year, **optdict)
|
|
elif len(args) == 2:
|
|
result = cal.formatyear(int(args[1]), **optdict)
|
|
elif len(args) == 3:
|
|
result = cal.formatmonth(int(args[1]), int(args[2]), **optdict)
|
|
else:
|
|
parser.error("incorrect number of arguments")
|
|
sys.exit(1)
|
|
write = sys.stdout.write
|
|
if options.encoding:
|
|
result = result.encode(options.encoding)
|
|
write = sys.stdout.buffer.write
|
|
write(result)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main(sys.argv)
|