定义变量
a = 1
b = 2
erroStr = "More" if a > b else "Less"
print(erroStr) # 运行结果为：Less
print({True: "More", False: "Less"}[a > b]) # 运行结果为：Less
(flase,true)[表达式]
print(("FalseValue", "TrueValue")[a > b]) # 运行结果为：FalseValue
原文：https://www.cnblogs.com/Alex-Mercer/p/12723568.html