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whatsnew: porting note for sysconfig 'SO' key deprecation.

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R David Murray 2014-03-09 20:39:52 -04:00
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Doc/whatsnew/3.4.rst
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@ -2249,6 +2249,11 @@ Changes in the Python API
future have no default, all calls to :func:`hmac.new` should be changed to future have no default, all calls to :func:`hmac.new` should be changed to
explicitly specify a *digestmod* (:issue:`17276`). explicitly specify a *digestmod* (:issue:`17276`).
* Calling :func:`sysconfig.get_config_var` with the ``SO`` key, or looking
``SO`` up in the results of a call to :func:`sysconfig.get_config_vars`
is deprecated. This key should be replaced by ``EXT_SUFFIX`` or
``SHLIB_SUFFIX``, depending on the context (:issue:`19555`).
* Any calls to ``open`` functions that specify ``U`` should be modified. * Any calls to ``open`` functions that specify ``U`` should be modified.
``U`` is ineffective in Python3 and will eventually raise an error if used. ``U`` is ineffective in Python3 and will eventually raise an error if used.
Depending on the function, the equivalent of its old Python2 behavior can be Depending on the function, the equivalent of its old Python2 behavior can be