TypeError: '<' not supported between instances of 'str' and 'int'

<不支持str实例和int实例之间的对比

birth是str类型

2000是int类型

所以无法对比，报错

1 birth = input(‘birth: ‘)
2 if birth < 2000:
3     print(‘00前‘)
4 else:
5     print(‘00后‘)

修改为：

1 s = input(‘birth: ‘)
2 birth = int(s)
3 if birth < 2000:
4     print(‘00前‘)
5 else:
6     print(‘00后‘)

TypeError: '<' not supported between instances of 'str' and 'int'

原文地址：https://www.cnblogs.com/denggelin/p/8946618.html