import builtins
import sys
def test_import(name, *args, **kwargs):
    sys.modules[name] = object()
    return sys.modules[name]
builtins.__import__ = test_import
raise RuntimeError("Test")

python: ../Objects/call.c:618: PyObject *callmethod(PyThreadState *, PyObject *, const char *, struct __va_list_tag *): Assertion `callable != NULL' failed.