**This version is only relevant for Python 3.3, which does not include asyncio in its stdlib.**
Master repo: https://github.com/python/asyncio
The asyncio module provides infrastructure for writing single-threaded
concurrent code using coroutines, multiplexing I/O access over sockets and
other resources, running network clients and servers, and other related
primitives. Here is a more detailed list of the package contents:
* a pluggable event loop with various system-specific implementations;
* transport and protocol abstractions (similar to those in Twisted);
* concrete support for TCP, UDP, SSL, subprocess pipes, delayed calls, and
others (some may be system-dependent);
* a Future class that mimics the one in the concurrent.futures module, but
adapted for use with the event loop;
* coroutines and tasks based on ``yield from`` (PEP 380), to help write
concurrent code in a sequential fashion;
* cancellation support for Futures and coroutines;
* synchronization primitives for use between coroutines in a single thread,
mimicking those in the threading module;
* an interface for passing work off to a threadpool, for times when you
absolutely, positively have to use a library that makes blocking I/O calls.
Note: The implementation of asyncio was previously called "Tulip".
Installation
============
To install asyncio, type::
pip install asyncio
asyncio requires Python 3.3 or later! The asyncio module is part of the Python
standard library since Python 3.4.
asyncio is a free software distributed under the Apache license version 2.0.
Websites
========
* `asyncio project at GitHub <https://github.com/python/asyncio>`_: source
code, bug tracker
* `asyncio documentation <https://docs.python.org/dev/library/asyncio.html>`_
* Mailing list: `python-tulip Google Group
<https://groups.google.com/forum/?fromgroups#!forum/python-tulip>`_
* IRC: join the ``#asyncio`` channel on the Freenode network
Development
===========
The actual code lives in the 'asyncio' subdirectory. Tests are in the 'tests'
subdirectory.
To run tests, run::
tox
Or use the Makefile::
make test
To run coverage (coverage package is required)::
make coverage
On Windows, things are a little more complicated. Assume 'P' is your
Python binary (for example C:\Python33\python.exe).
You must first build the _overlapped.pyd extension and have it placed
in the asyncio directory, as follows:
C> P setup.py build_ext --inplace
If this complains about vcvars.bat, you probably don't have the
required version of Visual Studio installed. Compiling extensions for
Python 3.3 requires Microsoft Visual C++ 2010 (MSVC 10.0) of any
edition; you can download Visual Studio Express 2010 for free from
http://www.visualstudio.com/downloads (scroll down to Visual C++ 2010
Express).
Once you have built the _overlapped.pyd extension successfully you can
run the tests as follows:
C> P runtests.py
And coverage as follows:
C> P runtests.py --coverage
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