Python 练习实例78
Python 100例题目：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。
程序源代码：
实例(Python 2.0+)
#!/usr/bin/python
# -*- coding: UTF-8 -*-
if __name__ == '__main__':
person = {"li":18,"wang":50,"zhang":20,"sun":22}
m = 'li'
for key in person.keys():
if person[m] < person[key]:
m = key
print '%s,%d' % (m,person[m])
以上实例输出结果为：
wang,50
参考解法：
#!/usr/bin/env python # -*- coding: UTF-8 -*- import operator __author__ = 'Lei Zhong' person = {"li":18,"wang":50,"zhang":20,"sun":22} print max(person.iteritems(), key=operator.itemgetter(1))[0] # 获取最大值的 key print max(person.values()) # 获取最大值参考方法：
#!/usr/bin/env python #-*- coding: UTF-8 -*- person = {"li":18,"wang":50,"zhang":20,"sun":22} def find_max(dict): max_age = 0 for key, value in dict.items(): if value > max_age: max_age = value name = key print name print max_age find_max(person)