str = "i am a Girl" str.capitalize() ‘‘‘ 运行结果：‘I am a girl‘ ‘‘‘ str.title() ‘‘‘ 运行结果：‘I Am A Girl‘ ‘‘‘ str.upper() ‘‘‘ 运行结果：‘I AM A GIRL‘ ‘‘‘ str.upper() ‘‘‘ 运行结果：‘i am a girl‘ ‘‘‘
Python 改变字符串大小写的方法
原文：https://www.cnblogs.com/belle-ls/p/12859846.html
