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#665194: Add a localtime function to email.utils.

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Without this function people would be tempted to use the other date functions
in email.utils to compute an aware localtime, and those functions are not as
good for that purpose as this code.  The code is Alexander Belopolsy's from
his proposed patch for issue 9527, with a fix (and additional tests) by Brian
K. Jones.
This commit is contained in:
R David Murray 2012-05-25 23:22:59 -04:00
parent dcaf2ece6c
commit d2d521eafd
5 changed files with 146 additions and 2 deletions
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18
Doc/library/email.util.rst
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@ -93,8 +93,6 @@ There are several useful utilities provided in the :mod:`email.utils` module:
corresponding a :class:`~datetime.timezone` :class:`~datetime.tzinfo`.
.. versionadded:: 3.3
.. function:: mktime_tz(tuple)
Turn a 10-tuple as returned by :func:`parsedate_tz` into a UTC timestamp. It
@ -140,6 +138,22 @@ There are several useful utilities provided in the :mod:`email.utils` module:
.. versionadded:: 3.3
.. function:: localtime(dt=None)
Return local time as an aware datetime object. If called without
arguments, return current time. Otherwise *dt* argument should be a
:class:`~datetime.datetime` instance, and it is converted to the local time
zone according to the system time zone database. If *dt* is naive (that
is, ``dt.tzinfo`` is ``None``), it is assumed to be in local time. In this
case, a positive or zero value for *isdst* causes ``localtime`` to presume
initially that summer time (for example, Daylight Saving Time) is or is not
(respectively) in effect for the specified time. A negative value for
*isdst* causes the ``localtime`` to attempt to divine whether summer time
is in effect for the specified time.
.. versionadded:: 3.3
.. function:: make_msgid(idstring=None, domain=None)
Returns a string suitable for an :rfc:`2822`\ -compliant