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whatsnew: bytes/bytearray.join args, PYTHONPATH= is same as not set.

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R David Murray 2014-02-10 19:12:52 -05:00
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commit 96eeddba05
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Doc/whatsnew/3.4.rst
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@ -364,6 +364,9 @@ Some smaller changes made to the core Python language are:
Contributed by Victor Stinner, Kang-Hao (Kenny) Lu and Serhiy Storchaka in Contributed by Victor Stinner, Kang-Hao (Kenny) Lu and Serhiy Storchaka in
:issue:`12892`. :issue:`12892`.
* :class:`bytes`.join() and :class:`bytearray`.join() now accept arbitrary
buffer objects as arguments. (Contributed by Antoine Pitrou in
:issue:`15958`.)
New Modules New Modules
@ -1609,6 +1612,20 @@ Porting to Python 3.4
This section lists previously described changes and other bugfixes This section lists previously described changes and other bugfixes
that may require changes to your code. that may require changes to your code.
Changes in 'python' command behavior
------------------------------------
* In a posix shell, setting an environment variable to an empty value is
generally equivalent to not setting it at all. In particular, this is true
for the :envvar:`PATH` environment variable. However, setting
:envvar:`PYTHONPATH` to an empty value was *not* equivalent to not setting it
at all: setting :envvar:`PYTHONPATH` to an empty value was equivalent to
setting it to ``.``, which leads to confusion when reasoning by analogy to
how :envvar:`PATH` works. The behavior now conforms to the normal posix
convention.
Changes in the Python API Changes in the Python API
------------------------- -------------------------