python三元表达式实现方式

(1) variable = a if exper else b

(2)variable = (exper and [b] or [c])[0]

(2) variable = bool(exper) and b or c 

上面三种用法都可以达到目的，类似C语言中 variable = exper ? b : c;即：如果exper表达式的值为true则variable = b，否则，variable = c

例如：

[python] view plaincopy

a,b=1,2
max = (a if a > b else b)
max = (a > b and [a] or [b])[0] #list
max = (a > b and a or b)