STINNER Victor added the comment:

> For example, hCryptProv in Python/random.c is inheritable or not?

This is not a standard handle. GetHandleInformation() fails with a Windows 
error 6 (invalid descriptor).

I listed inheritable handles with a loop on range(0, 0x1001): only handles of 
stdin, stdout and stderr are inheritable. The other handles are not inheritable.

I also listed handles of parent and child processes using "handle.exe" tool 
from Microsoft. I see that the child has less open handle, all file handles 
that I opened manually are not inheried, and everything looks fine.

So I think that the issue can now be closed.

----------
resolution:  -> fixed
status: open -> closed

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue21384>
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