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authorSandro Tosi <sandro.tosi@gmail.com>2012-04-24 17:46:06 (GMT)
committerSandro Tosi <sandro.tosi@gmail.com>2012-04-24 17:46:06 (GMT)
commitd11d0d6343b16f526c57ffd148a89548e0c6d681 (patch)
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Issue #14448: mention pytz; patch by Andrew Svetlov
Diffstat (limited to 'Doc/library/datetime.rst')
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1 files changed, 9 insertions, 1 deletions
diff --git a/Doc/library/datetime.rst b/Doc/library/datetime.rst
index 1f4cfba..b80c6a8 100644
--- a/Doc/library/datetime.rst
+++ b/Doc/library/datetime.rst
@@ -1518,7 +1518,6 @@ Example :class:`tzinfo` classes:
.. literalinclude:: ../includes/tzinfo-examples.py
-
Note that there are unavoidable subtleties twice per year in a :class:`tzinfo`
subclass accounting for both standard and daylight time, at the DST transition
points. For concreteness, consider US Eastern (UTC -0500), where EDT begins the
@@ -1558,6 +1557,15 @@ Applications that can't bear such ambiguities should avoid using hybrid
or any other fixed-offset :class:`tzinfo` subclass (such as a class representing
only EST (fixed offset -5 hours), or only EDT (fixed offset -4 hours)).
+.. seealso::
+
+ `pytz <http://pypi.python.org/pypi/pytz/>`_
+ The Standard Library has no :class:`tzinfo` instances except for UTC, but
+ it exists a third-party library which brings Olson timezone database to
+ Python: `pytz`.
+
+ `pytz` contains up-to-date information and its usage is recommended.
+
.. _datetime-timezone: