Padlock is a Python library that provides a lock through a single, simple interface and offers several backends (actually, for now, only one, until someone contributes another) so you can choose the backend that best fits your needs.

It's really easy to use. Here, for example, is how to create a cassandra row lock:

>>> import padlock, pycassa
>>> pool = pycassa.ConnectionPool('my_keyspace')
>>> with padlock.get('cassandra, pool=pool, column_family='my_column_family'):
...    do_important_shit()
"success!"

Huzzah!

Author: Samuel Sutch (@ssutch)

PyPi: http://pypi.python.org/pypi/padlock/

Docs: http://packages.python.org/padlock/

License: Apache 2.0

I am definitely open to contributions. Please feel free to submit your lock implementation.