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Merged
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Jan 10, 2019
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bpo-32146: Add documentation about frozen executables on Unix #5850

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bpo-32146: Warn about frozen executables on Unix
bbayles Feb 24, 2018
be4e166
bpo-32146: Add NEWS entry
bbayles Feb 25, 2018
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7 changes: 7 additions & 0 deletions Doc/library/multiprocessing.rst
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Expand Up @@ -186,6 +186,13 @@ A library which wants to use a particular start method should probably
use :func:`get_context` to avoid interfering with the choice of the
library user.

.. warning::

The ``'spawn'`` and ``'forkserver'`` start methods cannot currently
be used with "frozen" executables (i.e., binaries produced by
packages like **PyInstaller** and **cx_Freeze**) on Unix.
The ``'fork'`` start method does work.


Exchanging objects between processes
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Library/2018-02-25-10-17-23.bpo-32146.xOzUFW.rst
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@@ -0,0 +1,2 @@
Document the interaction between frozen executables and the spawn and
forkserver start methods in multiprocessing.