x!= 'MON' and x!= 'TUE' and x!= 'WED' ... and x!= 'SUN':这个代码表示什么意思呢。我试着运行，它是正确的，但是我不能理解。

慕数据7581622

2017-11-29

源自：初识Python 6-8

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慕设计9479289
2021-09-09

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慕设计9479289
2021-09-09

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觉不减肥
2017-12-26

它给的例子是看用户输入的是否有效，也就是说是否有这么一天。那么X（用户输入的）不是周一。。。且不是周日，那么就输出“input error”,反之，输出“input ok”

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stone007

问题是，题目要求的是判断输入的月份是否有效，答案中出现X2判断是否是SUN（周一）起什么作用？

2018-02-19 回复有任何疑惑可以回复我~

Yolandaxu1223

你好，请教一下X！是什么意思呀

2019-02-15 回复有任何疑惑可以回复我~

幕布斯8462414
2017-11-29

你估计是想判断x代表周几，上面意思是x不是周一并且x不是周二并且。。。，如果都成立则为True。有一个不成立就是False

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x!= 'MON' and x!= 'TUE' and x!= 'WED' ... and x!= 'SUN':这个代码表示什么意思呢。我试着运行，它是正确的，但是我不能理解。

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x!= 'MON' and x!= 'TUE' and x!= 'WED' ... and x!= 'SUN':这个代码表示什么意思呢。我试着运行，它是正确的，但是我不能理解。

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x!= 'MON' and x!= 'TUE' and x!= 'WED' ... and x!= 'SUN':这个代码表示什么意思呢。我试着运行，它是正确的，但是我不能理解。