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thread conditional code

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In article <mailman.987319642.9319.python-list at python.org>, Tim Peters<tim.one at home.com> writes>[Just van Rossum]>> Now what about when you'd want to be compatible with systems that>> don't support the thread module?>>Seems rarely a problem in practice.  The standard library has some examples,>though, chiefly tempfile.py.  On a threaded box, that needs a lock to ensure>that generated filenames are unique.  So, near the bottom of the 2.1 version,>it tries to import thread, and if that doesn't succeed it creates a>_DummyMutex class with do-nothing .acquire() and .release() methods.  Thanks>to the magic of Python not giving a rip about types <wink>, the>_ThreadSafeCounter class can then pretend it has locks everywhere.>>a-platform-without-threads-is-the-same-as-a-platform-with-one-thread-ly>    y'rs  - tim>>surely this dummying behaviour belongs at the root of the problem ie inthread rather than scattered everywhere.-- Robin Becker

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