cdef extern from "Python.h":
 int PY_VERSION_HEX

 unicode PyUnicode_FromString(const char *)

 void* PyMem_RawMalloc(size_t n) nogil
 void* PyMem_RawRealloc(void *p, size_t n) nogil
 void* PyMem_RawCalloc(size_t nelem, size_t elsize) nogil
 void PyMem_RawFree(void *p) nogil

 object PyUnicode_EncodeFSDefault(object)
 void PyErr_SetInterrupt() nogil

 object PyMemoryView_FromMemory(char *mem, ssize_t size, int flags)
 object PyMemoryView_FromObject(object obj)
 int PyMemoryView_Check(object obj)

 cdef enum:
 PyBUF_WRITE


cdef extern from "includes/compat.h":
 object Context_CopyCurrent()
 int Context_Enter(object) except -1
 int Context_Exit(object) except -1

 void PyOS_BeforeFork()
 void PyOS_AfterFork_Parent()
 void PyOS_AfterFork_Child()

 void _Py_RestoreSignals()