1.修改字符串的大小写

• title（）以首字母大写的方式显示每个单词　　
• upper（）将字符串全部改为大写
• lower（）将字符串全部改为小写

1 name="ada lovelace"
2 print(name.title())
3 print(name.upper())
4 print(name.lower())

Ada Lovelace
ADA LOVELACE
ada lovelace

2.通过+ 合并字符串

first_name="ada";
last_name="lovelance"
full_name=first_name+" "+last_name

print(full_name)

ada lovelance

3.使用制表符或者换行符来添加空白

>>> print("\tPython")
    Python
>>> print("python")
python
>>> print("Languages:\nPython\nC#\njava")
Languages:
Python
C#
java
>>> print("Languages:\n\tPython\n\tC#\n\tJava")
Languages:
    Python
    C#
    Java
>>> 

4.删除空白

lstrip() 删除左边空格

rstrip() 删除右边空格

>>> favorite_language='python '
>>> favorite_language
'python '
>>> favorite_language.rstrip()
'python'
>>> favorite_language
'python '
>>> favorite_language=" Python"
>>> favorite_language.lstrip()
'Python'
>>>