python编程从入门到实践笔记-2变量和简单数据类型

改变大小写
title()
将每个单词的首字母都改为大写

name = "ada lovelace"
print(name.title())
Ada Lovelace

upper()
将每个单词都改为大写

name = "Ada Lovelace"
print(name.upper())
ADA LOVELACE

lower()
将每个单词都改为小写

name = "Ada Lovelace"
print(name.lower())
ada lovelace

改变空白
\t
在字符串中添加制表符

print("\tPython")
print('python')
        Python
python

\n
在字符串中添加换行符

print("Languages:\nPython\nC\nJavaScript")
Languages:
Python
C
JavaScript

rstrip()
删除末尾空白

favorite_language = ' python '
favorite_language.rstrip()
' python'

lstrip()
删除开头空白

favorite_language = ' python '
favorite_language.lstrip()
'python '

strip()
删除两端空白

favorite_language = ' python '
favorite_language.strip()
'python'