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greenlet 0.3.4

Lightweight in-process concurrent programming

Downloads ↓ | Package Documentation

The greenlet package is a spin-off of Stackless, a version of CPython that supports micro-threads called "tasklets". Tasklets run pseudo-concurrently (typically in a single or a few OS-level threads) and are synchronized with data exchanges on "channels".

A "greenlet", on the other hand, is a still more primitive notion of micro-thread with no implicit scheduling; coroutines, in other words. This is useful when you want to control exactly when your code runs. You can build custom scheduled micro-threads on top of greenlet; however, it seems that greenlets are useful on their own as a way to make advanced control flow structures. For example, we can recreate generators; the difference with Python's own generators is that our generators can call nested functions and the nested functions can yield values too. Additionally, you don't need a "yield" keyword. See the example in tests/test_generator.py.

Greenlets are provided as a C extension module for the regular unmodified interpreter.

Greenlets are lightweight coroutines for in-process concurrent programming.

Who is using Greenlet?

There are several libraries that use Greenlet as a more flexible alternative to Python's built in coroutine support:

Getting Greenlet

The easiest way to get Greenlet is to install it with pip or easy_install:

pip install greenlet
easy_install greenlet

Source code archives and windows installers are available on the python package index at http://pypi.python.org/pypi/greenlet

The source code repository is hosted on github: https://github.com/python-greenlet/greenlet

The master branch - i.e. the development version - can be installed directly by running one of the following:

pip install greenlet==dev
easy_install greenlet==dev
 
File Type Py Version Uploaded on Size # downloads
greenlet-0.3.4-py2.4-win32.egg (md5)
built on Windows-XP 		Python Egg 2.4 2012-02-11 10KB 196
greenlet-0.3.4-py2.5-win32.egg (md5) Python Egg 2.5 2012-02-11 10KB 182
greenlet-0.3.4-py2.6-win32.egg (md5) Python Egg 2.6 2012-02-11 11KB 400
greenlet-0.3.4-py2.7-win-amd64.egg (md5) Python Egg 2.7 2012-02-11 12KB 457
greenlet-0.3.4-py2.7-win32.egg (md5) Python Egg 2.7 2012-02-11 11KB 2050
greenlet-0.3.4-py3.0-win32.egg (md5) Python Egg 3.0 2012-02-11 11KB 195
greenlet-0.3.4-py3.1-win-amd64.egg (md5) Python Egg 3.1 2012-02-11 12KB 156
greenlet-0.3.4-py3.1-win32.egg (md5) Python Egg 3.1 2012-02-11 11KB 162
greenlet-0.3.4-py3.2-win-amd64.egg (md5) Python Egg 3.2 2012-02-11 12KB 192
greenlet-0.3.4-py3.2-win32.egg (md5) Python Egg 3.2 2012-02-11 11KB 208
greenlet-0.3.4.win-amd64-py2.7.exe (md5) MS Windows installer 2.7 2012-02-11 232KB 173
greenlet-0.3.4.win-amd64-py3.1.exe (md5) MS Windows installer 3.1 2012-02-11 233KB 110
greenlet-0.3.4.win-amd64-py3.2.exe (md5) MS Windows installer 3.2 2012-02-11 233KB 126
greenlet-0.3.4.win32-py2.4.exe (md5) MS Windows installer 2.4 2012-02-11 73KB 122
greenlet-0.3.4.win32-py2.5.exe (md5) MS Windows installer 2.5 2012-02-11 73KB 127
greenlet-0.3.4.win32-py2.6.exe (md5) MS Windows installer 2.6 2012-02-11 206KB 209
greenlet-0.3.4.win32-py2.7.exe (md5) MS Windows installer 2.7 2012-02-11 206KB 502
greenlet-0.3.4.win32-py3.0.exe (md5) MS Windows installer 3.0 2012-02-11 206KB 123
greenlet-0.3.4.win32-py3.1.exe (md5) MS Windows installer 3.1 2012-02-11 206KB 120
greenlet-0.3.4.win32-py3.2.exe (md5) MS Windows installer 3.2 2012-02-11 206KB 162
greenlet-0.3.4.zip (md5) Source 2012-02-11 61KB 92344