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Python interface for libuv

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pyuv: Python interface for libuv

.. image:: :target:

pyuv is a Python module which provides an interface to libuv.

_ is a high performance asynchronous networking and platform abstraction library.

libuv is built on top of epoll/kequeue/event ports/etc on Unix and IOCP on Windows systems providing a consistent API on top of them.

pyuv's features:

  • Non-blocking TCP sockets
  • Non-blocking named pipes
  • UDP support (including multicast)
  • Timers
  • Child process spawning
  • Asynchronous DNS resolution (getaddrinfo)
  • Asynchronous file system APIs
  • High resolution time
  • System memory information
  • System CPUs information
  • Network interfaces information
  • Thread pool scheduling
  • ANSI escape code controlled TTY
  • File system events (inotify style and stat based)
  • IPC and TCP socket sharing between processes
  • Arbitrary file descriptor polling
  • Thread synchronization primitives

CI status

Stable branch (v1.x)

  • Travis CI: .. image:: :target:

  • AppVeyor: .. image:: :target:


Starting with version 1.0.0, pyuv follows the

Semantic Versioning 
_ specification, like libuv does.

All releases are downloadable from

the GitHub tags page 
, and the latest stable release from



pyuv can be installed via pip as follows:


pip install pyuv


Get the source:


git clone




Mac OSX:


(XCode needs to be installed)
export ARCHFLAGS="-arch x86_64"

Microsoft Windows (with Visual Studio):


python build_ext --inplace

Running the test suite

There are several ways of running the test ruite:

  • Run the test with the current Python interpreter:

From the toplevel directory, run:

nosetests -v
  • Use Tox to run the test suite in several virtualenvs with several interpreters

From the toplevel directory, run:

this will run the test suite on Python 2.7, 3.3 and 3.4 (you'll need to have them installed beforehand)


Saúl Ibarra Corretgé [email protected]


Unless stated otherwise on-file pyuv uses the MIT license, check LICENSE file.

Python versions

Python 2.7, and Python >= 3.3 versions are supported.


If you'd like to contribute, fork the project, make a patch and send a pull request. Have a look at the surrounding code and please, make yours look alike :-)

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