Python四期爬虫作业

【Python爬虫】逻辑运算 if 表达式练习

2017-08-17  本文已影响0人  d1b0f55d8efb

and: 一个为假都为假

or:同假为假 同真为真 一个为真一个为假 输出真

非0即为真 非真即为假

下列表达式逻辑运算后的结果为?(尽量直接思考解答,可以用代码测试结果)
True and True

ture

False and True

false

1 == 1 and 2 == 1

fasle

"test" == "test"

ture

1 == 1 or 2 != 1

ture

True and 1 == 1

ture

False and 0 != 0

false

True or 1 == 1

ture

"test" == "testing"

false

1 != 0 and 2 == 1

false

"test" != "testing"

ture

"test" == 1

false

not (True and False)

ture

not (1 == 1 and 0 != 1)

false

not (10 == 1 or 1000 == 1000)

ture

not (1 != 10 or 3 == 4)

false

not ("testing" == "testing" and "Zed" == "Cool Guy")

ture

1 == 1 and not ("testing" == 1 or 1 == 0)

ture

3 == 3 and not ("testing" == "testing" or "Python" == "Fun")

false

上一篇 下一篇

猜你喜欢

热点阅读