Welcome to pyuv’s documentation!

Python interface for libuv.

libuv is a high performance asynchronous networking library used as the platform layer for NodeJS. It’s built on top of liev and libeio on Unix and IOCP on Windows systems providing a consistent API on top of them.

libuv is written and maintained by Joyent Inc. and contributors.


pyuv’s source code is hosted on GitHub


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

Indices and tables

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