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- .. image:: https://travis-ci.org/agronholm/pythonfutures.svg?branch=master
- :target: https://travis-ci.org/agronholm/pythonfutures
- :alt: Build Status
- This is a backport of the `concurrent.futures`_ standard library module to Python 2.
- It should not be installed on Python 3, although there should be no harm in doing so, as the
- standard library takes precedence over third party libraries.
- To conditionally require this library only on Python 2, you can do this in your ``setup.py``:
- .. code-block:: python
- setup(
- ...
- extras_require={
- ':python_version == "2.7"': ['futures']
- }
- )
- Or, using the newer syntax:
- .. code-block:: python
- setup(
- ...
- install_requires={
- 'futures; python_version == "2.7"'
- }
- )
- .. warning:: The ``ProcessPoolExecutor`` class has known (unfixable) problems on Python 2 and
- should not be relied on for mission critical work.
- .. _concurrent.futures: https://docs.python.org/library/concurrent.futures.html
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