cython

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cdef extern from "Python.h":
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    ctypedef int int32_t
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    ctypedef int int64_t
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    ctypedef unsigned int uint32_t
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    ctypedef unsigned int uint64_t
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    const Py_ssize_t PY_SSIZE_T_MIN
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    const Py_ssize_t PY_SSIZE_T_MAX
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