[issue25256] Add sys.is_debug_build() public function to check if Python was compiled in debug mode

[STINNER Victor]

STINNER Victor added the comment:

I wrote this patch while working on new tests for Lib/test/regrtest.py: issue #25220. The Windows scripts PCbuild/rt.bat (and Tools/buildbot/test.bat) requires a "-d" command line option if the Python was compiled in debug mode. The flag is used to choose the name of the Python executable: python.exe or python_d.exe. In my patch, I used:

Py_DEBUG = hasattr(sys, 'getobjects')

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<http://bugs.python.org/issue25256>
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