Python如何将字符串中每个单词的首字母转为大写？

string模块的capwords()函数会把一个字符串中的所有单词首字母大写。

import string
s = 'The quick brown fox jumped over the lazy dog.'
print(s)
print(string.capwords(s))

输出结果：

The quick brown fox jumped over the lazy dog.
The Quick Brown Fox Jumped Over The Lazy Dog.