bpo-33812: Corrected astimezone for naive datetimes. (GH-7578) (GH-7600)
A datetime object d is aware if d.tzinfo is not None and
d.tzinfo.utcoffset(d) does not return None. If d.tzinfo is None,
or if d.tzinfo is not None but d.tzinfo.utcoffset(d) returns None,
d is naive.
This commit ensures that instances with non-None d.tzinfo, but
d.tzinfo.utcoffset(d) returning None are treated as naive.
In addition, C acceleration code will raise TypeError if
d.tzinfo.utcoffset(d) returns an object with the type other than
timedelta.
* Updated the documentation.
Assume that the term "naive" is defined elsewhere and remove the
not entirely correct clarification. Thanks, Tim.
(cherry picked from commit 877b23202b7e7d4f57b58504fd0eb886e8c0b377)
Co-authored-by: Alexander Belopolsky <abalkin@users.noreply.github.com>
diff --git a/Doc/library/datetime.rst b/Doc/library/datetime.rst
index 8d91f4e..1ac2570 100644
--- a/Doc/library/datetime.rst
+++ b/Doc/library/datetime.rst
@@ -1058,8 +1058,7 @@
If provided, *tz* must be an instance of a :class:`tzinfo` subclass, and its
:meth:`utcoffset` and :meth:`dst` methods must not return ``None``. If *self*
- is naive (``self.tzinfo is None``), it is presumed to represent time in the
- system timezone.
+ is naive, it is presumed to represent time in the system timezone.
If called without arguments (or with ``tz=None``) the system local
timezone is assumed for the target timezone. The ``.tzinfo`` attribute of the converted