欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

Python 字符串大小写转换的简单实例

程序员文章站 2024-02-22 14:50:16
①所有字母都转换为大写 # -*- coding:utf-8 -*- if __name__ == "__main__":     a...

①所有字母都转换为大写

# -*- coding:utf-8 -*-

if __name__ == "__main__":
    a = 'hello, world!'
    print(a.upper())输出:


HELLO, WORLD!

②所有字母都转换为小写

# -*- coding:utf-8 -*-

if __name__ == "__main__":
    a = 'HELLO, WORLD!'
    print(a.lower())输出:


hello, world!

③首字母转换成大写, 其余转换成小写

# -*- coding:utf-8 -*-

if __name__ == "__main__":
    a = 'HELLO, WORLD!'
    print(a.capitalize())输出:


Hello, world!


④所有单词的首字母转换成大写, 其余转换成小写

# -*- coding:utf-8 -*-

if __name__ == "__main__":
    a = 'HELLO, WORLD!'
    print(a.title())输出:


Hello, World!

⑤判断所有字母都为大写

# -*- coding:utf-8 -*-

if __name__ == "__main__":
    a = 'HELLO, WORLD!'
    print(a.isupper())
   
    b = 'hello, world!'
    print(b.isupper())输出:


True
False


⑥判断所有字母都为小写

# -*- coding:utf-8 -*-

if __name__ == "__main__":
    a = 'HELLO, WORLD!'
    print(a.islower())
   
    b = 'hello, world!'
    print(b.islower())输出:


False
True


⑦判断所有单词的首字母为大写

# -*- coding:utf-8 -*-

if __name__ == "__main__":
    a = 'HELLO, WORLD!'
    print(a.istitle())
   
    b = 'hello, world!'
    print(b.istitle())
   
    c = 'Hello, World!'
    print(c.istitle())输出:


False
False
True

以上这篇Python 字符串大小写转换的简单实例就是小编分享给大家的全部内容了,希望能给大家一个参考,也希望大家多多支持。