A simple hack to allow blocking calls to be made in Python background threads but with gevent-based scheduling (so that other greenlets can run while the call completes). It does this using the self-pipe trick, normally used for avoiding race conditions in signal handling but surprisingly nifty in this circumstance.
>>> import time
>>> import gevent
>>> from gevent_selfpipe import selfpipe
>>> def print_something():
... print "If this message appears it means the main thread yielded."
>>> gl = gevent.spawn(print_something)
>>> time.sleep(1) # Waits 1 second, nothing printed.
>>> selfpipe(time.sleep, 1) # Waits 1 second.
If this message appears it means the main thread yielded.pip install gevent-selfpipeThis is free and unencumbered software released into the public domain.
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