数据类型和取值

int整数用于计算：age = 18

bool布尔值：true false

str字符串存储少量得数据：name = ”紫薇“

list列表：user_list = ["李四","张三","小明"]

存储大量数据

user_list = ["李四","张三","小明"]
for hua in user_list:
    print(hua)

dict字典：user_info = {"name":"小明"，”age“:"18"}，

存储得为关系型数据，查询速度快

tuple元组：只读

set集合

user_info = {"name":"小明","age":"18"}
user_info["huahua"] = 999
print(user_info)
{'name': '小明', 'age': '18', 'huahua': 999}

数据类型嵌套

hua = [
    "张三",
    {"name":"小明","age":19},
    ["11","22","33"]]
hua[1]["age"] = 29#修改age值为29
print(hua[1]["age"])#打印age，29

user_list = [
{"name":"小明","age":"18","count":0},
{"name":"账单","age":"18","count":0},
{"name":"李四","age":"18","count":0}
    ]
#打印name和age的值
# for item in user_list:
#     print(item["name"],item["age"])
        # 小明 18
        # 账单 18
        # 李四 18
#修改count值为10
for item in user_list:
    item["count"] = 10
    print(item["name"],item["age"],item["count"])