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Python multiprocessing fork with improvements and bugfixes

Project description

======== billiard


|build-status-lin| |build-status-win| |license| |wheel| |pyversion| |pyimp|

.. |build-status-lin| image:: :alt: Build status on Linux :target:

.. |build-status-win| image:: :alt: Build status on Windows :target:

.. |license| image:: :alt: BSD License :target:

.. |wheel| image:: :alt: Billiard can be installed via wheel :target:

.. |pyversion| image:: :alt: Supported Python versions. :target:

.. |pyimp| image:: :alt: Support Python implementations. :target:


billiard is a fork of the Python 2.7 multiprocessing <>_ package. The multiprocessing package itself is a renamed and updated version of R Oudkerk's pyprocessing <>_ package. This standalone variant draws its fixes/improvements from python-trunk and provides additional bug fixes and improvements.

  • This package would not be possible if not for the contributions of not only the current maintainers but all of the contributors to the original pyprocessing package listed here <>_.

  • Also, it is a fork of the multiprocessing backport package by Christian Heims.

  • It includes the no-execv patch contributed by R. Oudkerk.

  • And the Pool improvements previously located in Celery_.

  • Billiard is used in and is a dependency for Celery_ and is maintained by the Celery team.

.. _Celery:


The documentation for billiard is available on Read the Docs <>_.

Bug reporting

Please report bugs related to multiprocessing at the Python bug tracker <>_. Issues related to billiard should be reported at

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