Python现在默认\t为缩进8字符，怎么设置成四字符每次打出来和书里的都不一样
https://blog.csdn.net/xu380393916/article/details/81048495
https://blog.csdn.net/weixin_33786077/article/details/93103813
打开file>setting>选择Editor>python>设置Tab size