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Tue Aug 6 02:48:18 CEST 2013 · https://mail.python.org/pipermail/python-dev/2013-August/127808.html

On 06/08/2013 1:23am, Victor Stinner wrote:
> Each operating system handles the inheritance of file descriptors
> differently. Windows creates non-inheritable file descriptors by
> default, whereas UNIX creates inheritable file descriptors by default.

The Windows API creates non-inheritable *handles* by default.  But the C 
runtime creates inheritable fds by default.

Also the socket library creates sockets with inheritable handles by 
default.  Apparently there isn't a reliable way to make sockets 
non-inheritable because anti-virus/firewall software can interfere:

http://stackoverflow.com/questions/12058911/can-tcp-socket-handles-be-set-not-inheritable

-- 
Richard

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Showing content from https://mail.python.org/pipermail/python-dev/2013-August/127808.html below:

Make newly created file descriptors non-inheritable