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cimport libc

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cdef extern from "Python.h" :

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    struct PyObject :

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        pass

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    ## string stuff

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    int PyObject_AsCharBuffer (object obj, char **buf, libc.ssize_t *len) except -1

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    ## except setting

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    PyObject* PyErr_SetFromErrno (PyObject *type)

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    PyObject *PyExc_OSError

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# raise OSError with errno

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# XXX: doesn't do anything with func

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cdef int raise_errno (char *func) except -1

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