cython3-legacy - 0.29.37-2 main

Cython is a language that makes writing C extensions for the Python language as
easy as Python itself. Cython is based on the well-known Pyrex, but supports
more cutting edge functionality and optimizations.
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The Cython language is very close to the Python language, but Cython
additionally supports calling C functions and declaring C types on variables
and class attributes. This allows the compiler to generate very efficient C
code from Cython code.
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This makes Cython the ideal language for wrapping external C libraries, and
for fast C modules that speed up the execution of Python code.
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This legacy version may not work with Python 3.12. In particular, the
pyximport module appears to fail. This legacy version should not be used
as a package run-time dependency.