[Python-Dev] [python-committers] [RELEASED] Python 3.4.0a2 (original) (raw)

Victor Stinner victor.stinner at gmail.com
Mon Sep 9 21:51:46 CEST 2013

2013/9/9 Antoine Pitrou <solipsis at pitrou.net>:

Le Mon, 9 Sep 2013 14:30:50 +0200, Victor Stinner <victor.stinner at gmail.com> a écrit :

2013/9/9 Larry Hastings <larry at hastings.org>: > Python 3.4 includes a range of improvements of the 3.x series, > including hundreds of small improvements and bug fixes. Major new > features and changes in the 3.4 release series so far include: > > * PEP 446, changing file descriptors to not be inherited by default > in subprocesses

The title of the PEP is "Make newly created file descriptors non-inheritable". It has an impact on all functions creating files and sockets not only the subprocess module. I don't think Larry's description is wrong. "Non-inheritable" is a shorthand for "non-inheritable in subprocesses" with "subprocesses" taken in the general sense (i.e. not only created with the subprocess module).

Oh, I misunderstood "in subprocesses", I read "in the subprocess module".

The definition of FD inheritance is tricky. For example, on UNIX "non-inheritable" file descriptors are still inherited at fork :-)

I hope that the documentation is explicit enough: http://docs.python.org/dev/library/os.html#inheritance-of-file-descriptors

Victor

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