参考：https://www.cnblogs.com/devlost/p/9908578.html
value = true if condition else false
等同于
if condition: value = true else: value = false
qianslup 2019-11-16 16:00 原文
参考：https://www.cnblogs.com/devlost/p/9908578.html
value = true if condition else false
等同于
if condition: value = true else: value = false