#三元运算，三目运算,if else简写

 if 1 == 1:

     name = "liangml"

 else:

     name = "NB"

 #如果 1==1 成立，name = ”liangml“ 否则 name = "NB"

 name = "liangml" if 1 == 1 else "NB"#三元运算

 #lambda表达式

 def f1(a1):

     return  a1 + 100

 f2 = lambda a1: a1 + 100#默认已经有return

 ret = f1(10)

 print(ret)

 r2 = f2(9)

 print(r2)