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    #cython

    #cpython

    #what is cython

    #python to c

    #cython tutorial

    #cython web framework

    #cython example

    #lxml findall

    #using cython

    #how to use cython

    #install cython

    #cython hello world

    #cython compile python

    #numba tutorial

    #cython compile

    #cython jupyter notebook

    #python group list

    #heudiconv

    #what is pypy

    #install pypy

    #pypy vs python

    #python

    #extensions

    #programming

    #source code

    #extension

    #mailing list

    #performance