Python之字符串

1.字符串使用

>>> str="what are you doing" >>> print(str.title()) What Are You Doing

使用title()函数时，可修改字符串字母的大小写，如上所述

>>> str="What Are You Doing" >>> print(str.upper()) WHAT ARE YOU DOING

使用upper()函数，可以将字符串字母全部改为大写

>>> str="What Are You Doing" >>> print(str.lower()) what are you doing

使用lower()函数，可以将字符串字母全部改为小写

2.拼接字符串

>>> str1="my name is" >>> str2="wu ming" >>> str3=""+str1+""+str2+"." >>> print(str3) my name iswu ming. >>> from time import ctime >>> print("new tile is"+ctime()) new tile isWed Oct 21 17:23:45 2020

3.将字符串拆成列表 使用split()函数，可以将字符串拆成列表

>>> str='what are you doing' >>> list=str.split() >>> list ['what', 'are', 'you', 'doing']