python中如何判断路径是否存在

>>> import os
>>> path = '/home/z'
>>> path = path.strip()                    strip函数默认是去除字符串两边的空格
>>> isExists = os.path.exists(path)      判断path路径是否存在
>>> print isExists
True
>>> path = 'h/z'
>>> path = 'home/zz'
>>> isExists = os.path.exists(path)
>>> os.makedirs(path)      新建文件夹path
>>> isExists = os.path.exists(path)
>>> print isExists
True
>>>