1、首字母大写
语法：S.capitalize() -> str title = "today is a good day" title_ca = title.capitalize() print(title_ca)
结果：today is a good day
2、大写转小写
1 语法：S.casefold() -> str 2 3 title = "TODAY is a GOOD day" 4 title_ca = title.casefold() 5 print(title_ca)
结果：Today is a good day
3、字符串居中
c = ‘kong‘ ret = c.center(10,‘*‘) print(ret)
结果：***kong***
4、字符串子串数量统计
S.count(sub[, start[, end]]) -> int title = "today is a good day" title_ca = title.count(‘y‘,1,5) print(title_ca)
结果：1
原文：http://www.cnblogs.com/kongzhagen/p/5426064.html