python判斷一個對象是否可迭代

如何判斷一個對象是可迭代對象？ 
方法是通過collections模塊的Iterable類型判斷：

 

 

>>> from collections import Iterable >>> isinstance('abc',Iterable) True >>> isinstance([1,2,3,4],Iterable) True >>> isinstance(1234,Iterable) False >>> isinstance((1,),Iterable) True >>> L = ['a','b','c'] >>> enumerate(L) <enumerate object at 0x03AA94E0>
>>> isinstance(enumerate(L),Iterable) True >>> for m,n in enumerate(L): ... print m,n ... 0 a 1 b 2 c