extern int asserts;
-#define ASSERT( a, message ) asserts++;if( !(a) ) { PyErr_SetString( PyExc_AssertionError, message " - " #a ); return NULL; }
+#define ASSERT( a, message ) asserts++;if( !(a) ) { fprintf( stderr, "Assert failed at %s:%i\n", __FILE__, __LINE__); PyErr_SetString( PyExc_AssertionError, message " - " #a ); return NULL; }
#define DECLARE_MODULE( module ) PyMODINIT_FUNC init##module( void ) { \
Py_InitModule( #module, module##_methods ); \