python学习—身份运算符和成员运算符

1、身份运算符：判断内存地址是否相同

is

is not

li = [11, 22, 33, 1, 2, 3]
li2 = [11, 22, 33, 1, 2, 3]
li3 = li
print(li is li2)
print(li is li3)

结果：

False
True

 

2、成员运算符： in     not in

li = [11, 22, 33, 1, 2, 3]
a = 11
print(a in li)

结果：True