https://github.com/veegee/guv

A fast event loop like gevent for Python 3, built on greenlets and libuv
https://github.com/veegee/guv

Last synced: 3 months ago
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A fast event loop like gevent for Python 3, built on greenlets and libuv

• Host: GitHub
• URL: https://github.com/veegee/guv
• Owner: veegee
• License: other
• Created: 2014-11-16T19:39:59.000Z (almost 10 years ago)
• Default Branch: develop
• Last Pushed: 2021-07-17T02:35:33.000Z (over 3 years ago)
• Last Synced: 2024-07-25T04:34:59.061Z (3 months ago)
• Language: Python
• Homepage: http://guv.readthedocs.org/
• Size: 1010 KB
• Stars: 220
• Watchers: 10
• Forks: 13
• Open Issues: 15
• Metadata Files:
  • Readme: README.rst
  • Contributing: CONTRIBUTING.rst
  • License: LICENSE

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• starred-awesome - guv - A fast event loop like gevent for Python 3, built on greenlets and libuv (Python)

README

        
guv = greenlets + libuv

=======================

|Version| |PyPI| |BuildStatus|

:Documentation: http://guv.readthedocs.org/

:Source: http://github.com/veegee/guv

:Keywords: guv, greenlet, gevent, eventlet

About

-----

guv is a fast networking library and WSGI server (like gevent/eventlet) for

**Python >= 3.2 and pypy3**

The event loop backend is pyuv_cffi_, which aims to be fully compatible with the

pyuv_ interface. pyuv_cffi is fully supported on CPython and pypy3. libuv_

>= 1.0.0 is required.

Asynchronous DNS queries are supported via dnspython3. To forcefully disable

greendns, set the environment variable ``GUV_NO_GREENDNS`` to any value.

guv currently only runs on POSIX-compliant operating systems, but Windows

support is not far off and can be added in the near future if there is a demand

for this.

This library is actively maintained and has a zero bug policy. Please submit

issues and pull requests, and bugs will be fixed immediately.

**This project is under active development and any help is appreciated.**

Quickstart

----------

Since guv is currently in alpha release state and under active development, it

is recommended to pull often and install manually::

    git clone https://github.com/veegee/guv.git

    cd guv

    python setup.py install

Note: libuv_ >= 1.0.0 is required. This is the first stable version but is a

recent release and may not be available in Debian/Ubuntu stable repositories, so

you must compile and install manually.

Serve your WSGI app using guv directly

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.. code-block:: python

    import guv; guv.monkey_patch()

    import guv.wsgi

    app = 

    if __name__ == '__main__':

        server_sock = guv.listen(('0.0.0.0', 8001))

        guv.wsgi.serve(server_sock, app)

Serve your WSGI app using guv with gunicorn_

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

::

    gunicorn -w 4 -b 127.0.0.1:8001 -k guv.GuvWorker wsgi_app:app

Note: you can use wrk_ to benchmark the performance of guv.

Crawl the web: efficiently make multiple "simultaneous" requests

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

.. code-block:: python

    import guv; guv.monkey_patch()

    import requests

    def get_url(url):

        print('get_url({})'.format(url))

        return requests.get(url)

    def main():

        urls = ['http://gnu.org'] * 10

        urls += ['https://eff.org'] * 10

        pool = guv.GreenPool()

        results = pool.starmap(get_url, zip(urls))

        for i, resp in enumerate(results):

            print('{}: done, length: {}'.format(i, len(resp.text)))

    if __name__ == '__main__':

        main()

Guarantees

----------

This library makes the following guarantees:

* `Semantic versioning`_ is strictly followed

* Compatible with Python >= 3.2.0 and PyPy3 >= 2.3.1 (Python 3.2.5)

.. _pyuv: https://github.com/saghul/pyuv

.. _pyuv_cffi: https://github.com/veegee/guv/tree/develop/pyuv_cffi

.. _libuv: https://github.com/libuv/libuv

.. _gunicorn: https://github.com/benoitc/gunicorn

.. _Semantic versioning: http://semver.org

.. _wrk: https://github.com/wg/wrk

.. |Version| image:: https://img.shields.io/github/tag/veegee/guv.svg

.. |PyPI| image:: https://img.shields.io/pypi/v/guv.svg

    :target: https://pypi.python.org/pypi/guv/

    :alt: Latest Version

.. |BuildStatus| image:: https://travis-ci.org/veegee/guv.svg?branch=develop

    :target: https://travis-ci.org/veegee/guv