Python For 循环
Python 循环
for 循环用于迭代序列（列表、元组、字典、集合或字符串）。
这不像其他编程语言中的 for 关键字，更像是其他面向对象编程语言中的迭代器方法。
使用 for 循环，我们可以对列表、元组、集合等中的每个项目执行一组语句。
for 循环不需要预先设置索引变量。
×
Contact Sales
If you want to use W3Schools services as an educational institution, team or enterprise, send us an e-mail:
sales@w3schools.com
Report Error
If you want to report an error, or if you want to make a suggestion, send us an e-mail:
help@w3schools.com
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.