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Metadata-Version: 2.1
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Name: txaio
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Version: 18.8.1
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Summary: Compatibility API between asyncio/Twisted/Trollius
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Home-page: https://github.com/crossbario/txaio
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Author: Crossbar.io Technologies GmbH
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Author-email: autobahnws@googlegroups.com
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License: MIT License
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Keywords: asyncio twisted trollius coroutine
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Platform: Any
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Classifier: License :: OSI Approved :: MIT License
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Classifier: Development Status :: 5 - Production/Stable
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Classifier: Environment :: Console
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Classifier: Framework :: Twisted
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Classifier: Intended Audience :: Developers
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Classifier: Operating System :: OS Independent
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Classifier: Programming Language :: Python
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Classifier: Programming Language :: Python :: 2
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Classifier: Programming Language :: Python :: 2.7
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Classifier: Programming Language :: Python :: 3
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Classifier: Programming Language :: Python :: 3.3
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Classifier: Programming Language :: Python :: 3.4
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Classifier: Programming Language :: Python :: 3.5
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Classifier: Programming Language :: Python :: 3.6
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Classifier: Programming Language :: Python :: 3.7
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Classifier: Programming Language :: Python :: Implementation :: CPython
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Classifier: Programming Language :: Python :: Implementation :: PyPy
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Classifier: Topic :: Software Development :: Libraries
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Classifier: Topic :: Software Development :: Libraries :: Application Frameworks
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Provides-Extra: asyncio
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Provides-Extra: twisted
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Provides-Extra: all
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Provides-Extra: dev
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Requires-Dist: six
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Provides-Extra: all
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Requires-Dist: zope.interface (>=3.6); extra == 'all'
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Requires-Dist: twisted (>=12.1.0); extra == 'all'
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Provides-Extra: asyncio
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Provides-Extra: dev
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Requires-Dist: wheel; extra == 'dev'
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Requires-Dist: pytest (>=2.6.4); extra == 'dev'
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Requires-Dist: pytest-cov (>=1.8.1); extra == 'dev'
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Requires-Dist: pep8 (>=1.6.2); extra == 'dev'
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Requires-Dist: sphinx (>=1.2.3); extra == 'dev'
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Requires-Dist: pyenchant (>=1.6.6); extra == 'dev'
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Requires-Dist: sphinxcontrib-spelling (>=2.1.2); extra == 'dev'
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Requires-Dist: sphinx-rtd-theme (>=0.1.9); extra == 'dev'
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Requires-Dist: tox (>=2.1.1); extra == 'dev'
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Requires-Dist: mock (==1.3.0); extra == 'dev'
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Requires-Dist: twine (>=1.6.5); extra == 'dev'
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Provides-Extra: twisted
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Requires-Dist: zope.interface (>=3.6); extra == 'twisted'
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Requires-Dist: twisted (>=12.1.0); extra == 'twisted'
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txaio
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=====
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| |Version| |Build Status| |Coverage| |Docs|
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--------------
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**txaio** is a helper library for writing code that runs unmodified on
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both `Twisted <https://twistedmatrix.com/>`_ and `asyncio <https://docs.python.org/3/library/asyncio.html>`_ / `Trollius <http://trollius.readthedocs.org/en/latest/index.html>`_.
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This is like `six <http://pythonhosted.org/six/>`_, but for wrapping
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over differences between Twisted and asyncio so one can write code
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that runs unmodified on both (aka *source code compatibility*). In
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other words: your *users* can choose if they want asyncio **or** Twisted
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as a dependency.
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Note that, with this approach, user code **runs under the native event
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loop of either Twisted or asyncio**. This is different from attaching
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either one's event loop to the other using some event loop adapter.
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Platform support
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----------------
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**txaio** runs on CPython 2.7/3.3+ and PyPy 2/3, on top of Twisted or asyncio. Specifically, **txaio** is tested on the following platforms:
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**Python 2:**
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* CPython 2.7 on Twisted 12.1, 13.2, 15.4, 16.5, trunk and on Trollius 2.0
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* PyPy 2 on Twisted 12.1, 13.2, 15.4, 16.5, trunk and on Trollius 2.0
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**Python 3:**
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* CPython 3.4 on Twisted 15.4, 16.5, trunk and on asyncio (stdlib)
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* CPython 3.5 on Twisted 15.4, 16.5, trunk and on asyncio (stdlib)
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* CPython 3.6 on Twisted 15.4, 16.5, trunk and on asyncio (stdlib)
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* PyPy 3 on Twisted 15.4, 16.5, trunk and on asyncio (stdlib)
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How it works
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------------
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Instead of directly importing, instantiating and using ``Deferred``
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(for Twisted) or ``Future`` (for asyncio) objects, **txaio** provides
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helper-functions to do that for you, as well as associated things like
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adding callbacks or errbacks.
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This obviously changes the style of your code, but then you can choose
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at runtime (or import time) which underlying event-loop to use. This
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means you can write **one** code-base that can run on Twisted *or*
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asyncio (without a Twisted dependency) as you or your users see fit.
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Code like the following can then run on *either* system:
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.. sourcecode:: python
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import txaio
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txaio.use_twisted() # or .use_asyncio()
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f0 = txaio.create_future()
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f1 = txaio.as_future(some_func, 1, 2, key='word')
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txaio.add_callbacks(f0, callback, errback)
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txaio.add_callbacks(f1, callback, errback)
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# ...
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txaio.resolve(f0, "value")
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txaio.reject(f1, RuntimeError("it failed"))
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Please refer to the `documentation <https://txaio.readthedocs.io/en/latest/>`_ for description and usage of the library features.
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.. |Version| image:: https://img.shields.io/pypi/v/txaio.svg
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:target: https://pypi.python.org/pypi/txaio
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.. |Build Status| image:: https://travis-ci.org/crossbario/txaio.svg?branch=master
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:target: https://travis-ci.org/crossbario/txaio
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.. |Coverage| image:: https://codecov.io/github/crossbario/txaio/coverage.svg?branch=master
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:target: https://codecov.io/github/crossbario/txaio
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.. |Docs| image:: https://readthedocs.org/projects/txaio/badge/?version=latest
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:target: https://txaio.readthedocs.io/en/latest/
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@@ -0,0 +1 @@
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txaio
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