test_threaded_import.py 文件源码

def test_side_effect_import(self):
        code = """if 1:
            import threading
            def target():
                import random
            t = threading.Thread(target=target)
            t.start()
            t.join()"""
        sys.path.insert(0, os.curdir)
        self.addCleanup(sys.path.remove, os.curdir)
        filename = TESTFN + ".py"
        with open(filename, "wb") as f:
            f.write(code.encode('utf-8'))
        self.addCleanup(unlink, filename)
        self.addCleanup(forget, TESTFN)
        importlib.invalidate_caches()
        __import__(TESTFN)