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Coroutine-based network library for Python 2, Python 3 and PyPy

Project description

gevent is a coroutine-based Python networking library.

Features include:

  • Fast event loop based on libev.

  • Lightweight execution units based on greenlet.

  • Familiar API that re-uses concepts from the Python standard library.

  • Cooperative sockets with SSL support.

  • DNS queries performed through c-ares or a threadpool.

  • Ability to use standard library and 3rd party modules written for standard blocking sockets

gevent is inspired by eventlet but features more consistent API, simpler implementation and better performance. Read why others use gevent and check out the list of the open source projects based on gevent.

gevent is licensed under MIT license.

Get gevent

Install Python 2.6, 2.7, 3.3 or 3.4 along with the greenlet extension (Python 3.5 has preliminary support). Or install PyPy 2.6 or above (but not PyPy3).

Download the latest release from Python Package Index or clone the repository.

Read the documentation online at http://www.gevent.org

Post feedback and issues on the bug tracker, mailing list, blog and twitter (@gevent).

Development

To install the latest development version:

pip install 'cython>=0.23.4' git+git://github.com/gevent/gevent.git#egg=gevent

Running Tests

There are a few different ways to run the tests. To simply run the tests on one version of Python during development, try this:

pip install cython>=0.23.4
python setup.py build
cd greentest
PYTHONPATH=.. python testrunner.py --config ../known_failures.py

Before submitting a pull request, it’s a good idea to run the tests across all supported versions of Python, and to check the code quality using pep8 and pyflakes. This is what is done on Travis CI. Locally it can be done using tox:

pip install tox
tox

The testrunner accepts a --coverage argument to enable code coverage metrics through the coverage.py package. That would go something like this:

cd greentest
PYTHONPATH=.. python testrunner.py --config ../known_failures.py --coverage
coverage combine
coverage html -i
<open htmlcov/index.html>

Builds on Travis CI automatically submit updates to coveralls.io.

https://coveralls.io/repos/gevent/gevent/badge.svg?branch=master&service=github

Continuous integration

A test suite is run for every push and pull request submitted. Travis CI is used to test on Linux, and AppVeyor runs the builds on Windows.

https://travis-ci.org/gevent/gevent.svg?branch=master https://ci.appveyor.com/api/projects/status/q4kl21ng2yo2ixur?svg=true

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