C extension module doesn't throw exception after setting error indicator through PyErr_SetString()

[rahul]

Hi TJG,

The above link also doesn't strictly said that return value should be NULL only, it only said that usually NULL pointer used. No where I saw that it is nessasory t

At http://docs.python.org/c-api/exceptions.html. it is written that "Most functions also return an error indicator, usually NULL if they are supposed to return a pointer, or -1 if they return an integer (exception: the PyArg_*() functions return 1 for success and 0 for failure)." this also told that usually NULL is used but we can change the return error indicator to any value. As like PyArg_*() used 0 for error value.

Thanks,
Rahul