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bpo-36588: On AIX, remove major version from sys.platform (GH-12787) 

On AIX, sys.platform doesn't contain the major version anymore.
Always return 'aix', instead of 'aix3' .. 'aix7'.  Since
older Python versions include the version number, it is recommended to
always use sys.platform.startswith('aix').
This commit is contained in:
Michael Felt 2019-04-12 16:15:32 +02:00 committed by Victor Stinner
parent 9b8314cfe2
commit 9d949f7796
5 changed files with 22 additions and 2 deletions
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11
Doc/library/sys.rst
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@ -1014,7 +1014,7 @@ always available.
This string contains a platform identifier that can be used to append
platform-specific components to :data:`sys.path`, for instance.
For Unix systems, except on Linux, this is the lowercased OS name as
For Unix systems, except on Linux and AIX, this is the lowercased OS name as
returned by ``uname -s`` with the first part of the version as returned by
``uname -r`` appended, e.g. ``'sunos5'`` or ``'freebsd8'``, *at the time
when Python was built*. Unless you want to test for a specific system
@ -1024,12 +1024,15 @@ always available.
# FreeBSD-specific code here...
elif sys.platform.startswith('linux'):
# Linux-specific code here...
elif sys.platform.startswith('aix'):
# AIX-specific code here...
For other systems, the values are:
================ ===========================
System ``platform`` value
================ ===========================
AIX ``'aix'``
Linux ``'linux'``
Windows ``'win32'``
Windows/Cygwin ``'cygwin'``
@ -1042,6 +1045,12 @@ always available.
older Python versions include the version number, it is recommended to
always use the ``startswith`` idiom presented above.
.. versionchanged:: 3.8
On AIX, :attr:`sys.platform` doesn't contain the major version anymore.
It is always ``'aix'``, instead of ``'aix5'`` or ``'aix7'``. Since
older Python versions include the version number, it is recommended to
always use the ``startswith`` idiom presented above.
.. seealso::
:attr:`os.name` has a coarser granularity. :func:`os.uname` gives

5
Doc/whatsnew/3.8.rst
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@ -700,6 +700,11 @@ Changes in Python behavior
raised when getting the attribute from the type dictionary are no longer
ignored. (Contributed by Serhiy Storchaka in :issue:`35459`.)
* On AIX, :attr:`sys.platform` doesn't contain the major version anymore.
It is always ``'aix'``, instead of ``'aix3'`` .. ``'aix7'``. Since
older Python versions include the version number, it is recommended to
always use the ``sys.platform.startswith('aix')``.
(Contributed by M. Felt in :issue:`36588`.)
Changes in the Python API
-------------------------

5
Misc/NEWS.d/next/Core and Builtins/2019-04-11-14-36-55.bpo-36588.wejLoC.rst Normal file
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@ -0,0 +1,5 @@
On AIX, :attr:`sys.platform` doesn't contain the major version anymore.
Always return ``'aix'``, instead of ``'aix3'`` .. ``'aix7'``. Since
older Python versions include the version number, it is recommended to
always use ``sys.platform.startswith('aix')``.
Contributed by M. Felt.

2
configure vendored
View File

@ -3281,6 +3281,7 @@ then
MACHDEP="$ac_md_system$ac_md_release"
case $MACHDEP in
aix*) MACHDEP="aix";;
linux*) MACHDEP="linux";;
cygwin*) MACHDEP="cygwin";;
darwin*) MACHDEP="darwin";;
@ -10199,7 +10200,6 @@ fi
if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
if test -n "$ac_tool_prefix"; then
# Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.

1
configure.ac
View File

@ -404,6 +404,7 @@ then
MACHDEP="$ac_md_system$ac_md_release"
case $MACHDEP in
aix*) MACHDEP="aix";;
linux*) MACHDEP="linux";;
cygwin*) MACHDEP="cygwin";;
darwin*) MACHDEP="darwin";;