except Exception as ex: errors.append(['get_item', "ex:" + str(ex)]) try: expect += 3 del a4["a"] if "a" not in a4: total += 3 except Exception as ex: errors.append(['del', "ex:" + str(ex)]) # test update() try: expect += 2 src_dict = {"a": [1, 2]} a4.update(src_dict) assert a4["a"] == [1, 2] and a4["a"] is not src_dict["a"] total += 2 except Exception as ex: errors.append(['update', "ex:" + str(ex)]) # test time import time s = json.dumps({"a": 123456, "b": [{"a": "test", "b": True}], "c": "1" * 100}) start = time.time() for i in range(1000): json.loads(s) elapsed1 = time.time() - start