python-memcache is thread safe

python-memcache is a thread safe library. In memcache.py, which is the single source file, you’ll find:

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try:
    # Only exists in Python 2.4+
    from threading import local
except ImportError:
    # TODO:  add the pure-python local implementation
    class local(object):
        pass
class Client(local):
  ...

Which means that all data accessed through self.variable_name have values which are thread specific (as long as you are running python version 2.4 or higher.) Very cool. Before I looked at the code, I wrote some multi-threaded tests to check and see if anything fishy would happen. I’d say looking at the code is a better solution.

more details threading.local