Python——字典dict

字典也是一个容器类型的数据，可以存储多个键值对数据, 它的表现形式: {key:value, …}

my_dict = {“name”: “李四”, “age”: 20}
print(my_dict, type(my_dict))

my_dict = {“name”: “李四”, “age”: 20}
print(my_dict)

添加数据

my_dict[“sex”] = “男”

print(my_dict)

修改数据

my_dict[“age”] = 30

print(my_dict)

删除数据是通过key来完成，因为字典中的key是唯一的不能重复

del my_dict[“name”]
print(my_dict)

sex = my_dict.pop(“sex”)
print(sex)
print(my_dict)

查看数据

my_dict = {‘name’: ‘李四’, ‘age’: 30, ‘sex’: ‘男’, “address”: “邢台”}

name = my_dict[“address”]

print(name)

name = my_dict.get(“address”, “北京”)
print(name)