#利用完全动态的__getattr__,链式调用
class chain(object):
def __init__(self,path=''):
self._path=path
def __getattr__(self,path):
return ('%s/%s'%(self._path,path))
def __str__(self):
return self._path
__repr__=__str__
# your code goes here
# your code goes here
# your code goes here
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