ctypes_errno.py 文件源码

def _pythonapi_geterrno():
        """
        Read errno using Python C API: raise an exception with PyErr_SetFromErrno
        and then read error code 'errno'.

        This function may raise an RuntimeError.
        """
        try:
            pythonapi.PyErr_SetFromErrno(py_object(OSError))
        except OSError, err:
            return err.errno
        else:
            raise RuntimeError("get_errno() is unable to get error code")