test_threaded_import.py 文件源码

def find_module(self, name, path=None):
        # Simulate some thread-unsafe behaviour. If calls to find_module()
        # are properly serialized, `x` will end up the same as `numcalls`.
        # Otherwise not.
        assert imp.lock_held()
        with self.lock:
            self.numcalls += 1
        x = self.x
        time.sleep(0.01)
        self.x = x + 1