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cdef extern from "Python.h": 
 
    ########################################################################### 
    # Warning: 
    # 
    # The CObject API is deprecated as of Python 3.1. Please switch to 
    # the new Capsules API. 
    ########################################################################### 
 
    int PyCObject_Check(object p) 
    #     Return true if its argument is a PyCObject. 
 
    object PyCObject_FromVoidPtr(void* cobj, void (*destr)(void *)) 
    #     Return value: New reference. 
    # 
    #     Create a PyCObject from the void * cobj. The destr function will 
    #     be called when the object is reclaimed, unless it is NULL. 
 
    object PyCObject_FromVoidPtrAndDesc(void* cobj, void* desc, void (*destr)(void *, void *)) 
    #     Return value: New reference. 
    # 
    #     Create a PyCObject from the void * cobj. The destr function will 
    #     be called when the object is reclaimed. The desc argument can be 
    #     used to pass extra callback data for the destructor function. 
 
    void* PyCObject_AsVoidPtr(object self) except? NULL 
    #     Return the object void * that the PyCObject self was created with. 
 
    void* PyCObject_GetDesc(object self) except? NULL 
    #     Return the description void * that the PyCObject self was created with. 
 
    int PyCObject_SetVoidPtr(object self, void* cobj) except 0 
    #     Set the void pointer inside self to cobj. The PyCObject must not 
    #     have an associated destructor. Return true on success, false on 
    #     failure.