Trollius altaicus from Khangai Mountains (Mongòlia)

Trollius 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 generators (yield), 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.

Trollius is a portage of the asyncio project (asyncio module, PEP 3156) on Python 2. Trollius works on Python 2.7, 3.3 and 3.4. It has been tested on Windows, Linux, Mac OS X, FreeBSD and OpenIndiana.

See also the asyncio project at Github.

Trollius name

Extract of Trollius Wikipedia article:

Trollius is a genus of about 30 species of plants in the family Ranunculaceae, closely related to Ranunculus. The common name of some species is globeflower or globe flower. Native to the cool temperate regions of the Northern Hemisphere, with the greatest diversity of species in Asia, trollius usually grow in heavy, wet clay soils.