Feb 24, 2022 · Feb 8, 2022
diff --git a/Doc/library/calendar.rst b/Doc/library/calendar.rst

 .. note::

   The :meth:`formatweekday` and :meth:`formatmonthname` methods of these two
   classes temporarily change the ``LC_TIME`` locale to the given *locale*.  Because
   the current locale is a process-wide setting, they are not thread-safe.
   The constructor, :meth:`formatweekday` and :meth:`formatmonthname` methods
   of these two classes temporarily change the ``LC_TIME`` locale to the given
   *locale*. Because the current locale is a process-wide setting, they are
   not thread-safe.


 For simple text calendars this module provides the following functions.
diff --git a/Lib/calendar.py b/Lib/calendar.py
 class different_locale:
    def __init__(self, locale):
        self.locale = locale
        self.oldlocale = None

    def __enter__(self):
        self.oldlocale = _locale.getlocale(_locale.LC_TIME)
        self.oldlocale = _locale.setlocale(_locale.LC_TIME, None)
        _locale.setlocale(_locale.LC_TIME, self.locale)

    def __exit__(self, *args):
        if self.oldlocale is None:
            return
        _locale.setlocale(_locale.LC_TIME, self.oldlocale)


 def _get_default_locale():
    locale = _locale.setlocale(_locale.LC_TIME, None)
    if locale == "C":
        with different_locale(""):
            # The LC_TIME locale does not seem to be configured:
            # get the user preferred locale.
            locale = _locale.setlocale(_locale.LC_TIME, None)
    return locale


 class LocaleTextCalendar(TextCalendar):
    """
    This class can be passed a locale name in the constructor and will return
    def __init__(self, firstweekday=0, locale=None):
        TextCalendar.__init__(self, firstweekday)
        if locale is None:
            locale =_locale.getlocale(_locale.LC_TIME)
            locale =_get_default_locale()
        self.locale = locale

    def formatweekday(self, day, width):
    def __init__(self, firstweekday=0, locale=None):
        HTMLCalendar.__init__(self, firstweekday)
        if locale is None:
            locale =_locale.getlocale(_locale.LC_TIME)
            locale =_get_default_locale()
        self.locale = locale

    def formatweekday(self, day):
Original file line number	Diff line number	Diff line change
Expand Up		@@ -289,9 +289,10 @@ interpreted as prescribed by the ISO 8601 standard. Year 0 is 1 BC, year -1 is

		.. note::

		The :meth:`formatweekday` and :meth:`formatmonthname` methods of these two
		classes temporarily change the ``LC_TIME`` locale to the given locale. Because
		the current locale is a process-wide setting, they are not thread-safe.
		The constructor, :meth:`formatweekday` and :meth:`formatmonthname` methods
		of these two classes temporarily change the ``LC_TIME`` locale to the given
		locale. Because the current locale is a process-wide setting, they are
		not thread-safe.


		For simple text calendars this module provides the following functions.
Expand Down
Original file line number	Diff line number	Diff line change
Expand Up		@@ -548,15 +548,28 @@ def formatyearpage(self, theyear, width=3, css='calendar.css', encoding=None):
		class different_locale:
		def __init__(self, locale):
		self.locale = locale
		self.oldlocale = None

		def __enter__(self):
		self.oldlocale = _locale.getlocale(_locale.LC_TIME)
		self.oldlocale = _locale.setlocale(_locale.LC_TIME, None)
		_locale.setlocale(_locale.LC_TIME, self.locale)

		def __exit__(self, *args):
		if self.oldlocale is None:
		return
		_locale.setlocale(_locale.LC_TIME, self.oldlocale)


		def _get_default_locale():
		locale = _locale.setlocale(_locale.LC_TIME, None)
		if locale == "C":
		with different_locale(""):
		# The LC_TIME locale does not seem to be configured:
		# get the user preferred locale.
		locale = _locale.setlocale(_locale.LC_TIME, None)
		return locale


		class LocaleTextCalendar(TextCalendar):
		"""
		This class can be passed a locale name in the constructor and will return
Expand All		@@ -566,7 +579,7 @@ class LocaleTextCalendar(TextCalendar):
		def __init__(self, firstweekday=0, locale=None):
		TextCalendar.__init__(self, firstweekday)
		if locale is None:
		locale =_locale.getlocale(_locale.LC_TIME)
		locale =_get_default_locale()
		self.locale = locale

		def formatweekday(self, day, width):
Expand All		@@ -586,7 +599,7 @@ class LocaleHTMLCalendar(HTMLCalendar):
		def __init__(self, firstweekday=0, locale=None):
		HTMLCalendar.__init__(self, firstweekday)
		if locale is None:
		locale =_locale.getlocale(_locale.LC_TIME)
		locale =_get_default_locale()
		self.locale = locale

		def formatweekday(self, day):
Expand Down