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greenlet 0.1

Lightweight in-process concurrent programming

(This is the py.magic.greenlet module from the py lib <http://codespeak.net/py/>)

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 test_generator.py.

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

File Type Py Version Size # downloads
greenlet-0.1-py2.4-macosx-10.3-fat.egg (md5, pgp)
built on Darwin-8.3.1
Python Egg 2.4 25KB 667
greenlet-0.1-py2.4-macosx-10.4-ppc.egg (md5, pgp)
built on Darwin-8.3.0
Python Egg 2.4 14KB 587
greenlet-0.1-py2.3-macosx-10.4-ppc.egg (md5, pgp)
built on Darwin-8.3.0
Python Egg 2.3 14KB 558
greenlet-0.1.tar.gz (md5, pgp) Source 17KB 1447