[issue29031] 'from module import *' and __all__

[Thomas Heller]

Thomas Heller added the comment:

Thanks Martin and eryk for correcting me and finding the real cause of
the problem.

Am 21.12.2016 um 13:04 schrieb eryk sun:
> ...  the private names _COORD, _FILETIME, _LARGE_INTEGER,
> _POINTL, _RECTL, _SMALL_RECT, and _ULARGE_INTEGER are skipped by a
> star import. That said, why are these private names (and also "tag"
> names) defined? And why isn't COORD defined instead of or in addition
> to _COORD?

These 'private' names and "tag" names were defined for compatibility
with the windows SDK C header files.  I didn't want to apply
the Python 'private' convention to the C names, so they were added to
the __all__ list.
It was an oversight that COORD wasn't defined, I developed a different
solution for the windows SDK names afterwards, but my code (which I'm
porting to Python 3) still uses 'from ctypes.wintypes import *'
and stumbled over the regression just now.

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