pypy-dev 7.3.0+dfsg-1 (amd64 binary) in ubuntu focal

 Header files for compiling cpython C extension modules for use with PyPy.
 Note that pure Python modules will probably perform better.
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 PyPy supports a subset of cpython's C API through its CPyExt subsystem.
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 Also included is PyPy.h, for embedding the PyPy interpreter.
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 PyPy is a fast, compliant alternative implementation of the Python language
 (2.7).