Python变量

>>> favorite_labfuage = '  python  '
>>> favorite_labfuage.restrip()
'  python'
>>> favorite_labfuage.lstrip()
'python '
>>> favorite_labfuage.strip()
'python'

restrip() 删除后端的空白
lstrip() 删除前端的空白
strip() 删除两端的空白

>>>motorcycles = ['honda','yamaha','suzuki']
>>>ponpend_motorcycles  = motorcycles .pop()
     ['honda','yamaha',]

pop()尾删