'''[http://doc.pypy.org/en/latest/coding-guide.html#RPython%|%RPython]''' is a
restricted subset of [Python] that is amenable to static analysis.


** Description **

Rpython was designed for the purpose of implementing [pypy], but it is
described as a language for writing [virtual machine%|%virtual machines], and
other languages are being implemented in Rpython as well.  Rpython
automatically creates a tracing [JIT] compiler for the languages written in it
, focusing on on opimization of immutable data and pure functions .


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