python练手_78-字典

# -*- coding:utf-8 -*-
# @Author: CH
"""
@project: python study
@time:2019/1/9-19:48
@file_name:【程序78】字典.py
@IDE:PyCharm 
@else: DO NOT STOP STUDYING!!!
"""
# 题目 找到年龄最大的人，并输出。请找出程序中有什么问题。
# 程序分析 无
if __name__ == '__main__':
    person = {"li": 18, "wang": 50, "zhang": 20, "sun": 22}
    m = 'li'
    for key in person.keys():
        if person[m] < person[key]:#person[m]是指18，person[key]是遍历字典中的key值
            m = key

    print('%s,%d' % (m, person[m]))