---恢复内容开始---
# 字典是一个无序集合，输出也是杂乱
xiaoming={"name":"小明","age":18,"weight":75.5,"height":170} print(xiaoming) print(xiaoming["age"]) # 若key不存在，会新增键值对
xiaoming["gender"]="male"
print(xiaoming) # 若key存在，会修改已存在的键值对
xiaoming["age"]=21
print(xiaoming) # 迭代遍历字典 # k指的是每次循环中，获取到的键值对的key
for k in xiaoming: print("%s--%s" %(k,xiaoming[k]))
# 开发中，把多个字典放在一个列表中，再进行遍历
card_list=[ {"name": "张三","phone":112},{"name": "李四","age": 20,"phone": 110} ] for info in card_list: print(info)
