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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /third_party/python/python_dateutil/dateutil/utils.py
parentInitial commit. (diff)
downloadfirefox-upstream/124.0.1.tar.xz
firefox-upstream/124.0.1.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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diff --git a/third_party/python/python_dateutil/dateutil/utils.py b/third_party/python/python_dateutil/dateutil/utils.py
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+# -*- coding: utf-8 -*-
+"""
+This module offers general convenience and utility functions for dealing with
+datetimes.
+
+.. versionadded:: 2.7.0
+"""
+from __future__ import unicode_literals
+
+from datetime import datetime, time
+
+
+def today(tzinfo=None):
+ """
+ Returns a :py:class:`datetime` representing the current day at midnight
+
+ :param tzinfo:
+ The time zone to attach (also used to determine the current day).
+
+ :return:
+ A :py:class:`datetime.datetime` object representing the current day
+ at midnight.
+ """
+
+ dt = datetime.now(tzinfo)
+ return datetime.combine(dt.date(), time(0, tzinfo=tzinfo))
+
+
+def default_tzinfo(dt, tzinfo):
+ """
+ Sets the ``tzinfo`` parameter on naive datetimes only
+
+ This is useful for example when you are provided a datetime that may have
+ either an implicit or explicit time zone, such as when parsing a time zone
+ string.
+
+ .. doctest::
+
+ >>> from dateutil.tz import tzoffset
+ >>> from dateutil.parser import parse
+ >>> from dateutil.utils import default_tzinfo
+ >>> dflt_tz = tzoffset("EST", -18000)
+ >>> print(default_tzinfo(parse('2014-01-01 12:30 UTC'), dflt_tz))
+ 2014-01-01 12:30:00+00:00
+ >>> print(default_tzinfo(parse('2014-01-01 12:30'), dflt_tz))
+ 2014-01-01 12:30:00-05:00
+
+ :param dt:
+ The datetime on which to replace the time zone
+
+ :param tzinfo:
+ The :py:class:`datetime.tzinfo` subclass instance to assign to
+ ``dt`` if (and only if) it is naive.
+
+ :return:
+ Returns an aware :py:class:`datetime.datetime`.
+ """
+ if dt.tzinfo is not None:
+ return dt
+ else:
+ return dt.replace(tzinfo=tzinfo)
+
+
+def within_delta(dt1, dt2, delta):
+ """
+ Useful for comparing two datetimes that may have a negligible difference
+ to be considered equal.
+ """
+ delta = abs(delta)
+ difference = dt1 - dt2
+ return -delta <= difference <= delta