Python not 关键字
定义和用法
not 关键字是一个逻辑运算符。
如果语句不为 True 则返回值为 True，否则返回 False。
相关页面
在我们的 Python 运算符教程 中了解更多关于运算符的信息。
×
Contact Sales
If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
[email protected]
Report Error
If you want to report an error, or if you want to make a suggestion, send us an e-mail:
[email protected]
Top Tutorials
HTML TutorialCSS Tutorial
JavaScript Tutorial
How To Tutorial
SQL Tutorial
Python Tutorial
W3.CSS Tutorial
Bootstrap Tutorial
PHP Tutorial
Java Tutorial
C++ Tutorial
jQuery Tutorial
Top References
HTML ReferenceCSS Reference
JavaScript Reference
SQL Reference
Python Reference
W3.CSS Reference
Bootstrap Reference
PHP Reference
HTML Colors
Java Reference
Angular Reference
jQuery Reference
W3Schools is optimized for learning and training. Examples might be simplified to improve reading and learning.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness
of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.
Copyright 1999-2024 by Refsnes Data. All Rights Reserved. W3Schools is Powered by W3.CSS.
Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness
of all content. While using W3Schools, you agree to have read and accepted our terms of use, cookie and privacy policy.
Copyright 1999-2024 by Refsnes Data. All Rights Reserved. W3Schools is Powered by W3.CSS.