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Sun Apr 15 18:31:46 EDT 2001 · http://mail.python.org/pipermail/python-list/2001-April/074814.html

In article <yTnC6.671587$JT5.17930511 at news20.bellglobal.com>,
Elliott Chapin <echapin at sympatico.ca> wrote:
>
>So how does Python do context switching, [anybody]?

It depends on whether you use native Python threads or microthreads
built on top of Stackless Python.  Python threads are built on top of
OS-level threads, so the OS handles the context switch.  Microthreads
are built on top of continuations in Stackless, and an essentially
cooperative multi-tasker handles the context switches.
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Python Performance vs. C++ in a Complex System