python dict 常用操作，,定义两个dict:d

python dict 常用操作，,定义两个dict:d

定义两个dict:

dict_a = {"A": 123, "B": 456}dict_b = {"C": 11, "A": 234}

1.按key取交集

dict_c = {k: v for k, v in dict_a.items() if k in dict_b.keys()}print(dict_c)结果:{‘A‘: 123}

2按key取差集

dict_e = {k: v for k, v in dict_a.items() if k not in dict_b.keys()}print(dict_e)结果：{‘B‘: 456}

3.按key取并集

dict_d = {**dict_a, **dict_b}print(dict_d)结果(注意"A"的值):{‘A‘: 234, ‘B‘: 456, ‘C‘: 11}

python dict 常用操作