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Python reversed() built-in function - Python Cheatsheet |
Return a reverse iterator. seq must be an object which has a __reversed__() method or supports the sequence protocol (the __len__() method and the __getitem__() method with integer arguments starting at 0). |
>>> i = reversed([1, 2, 3])
>>> i.__next__()
# 3
>>> i.__next__()
# 2
>>> i.__next__()
# 1
>>> i
# <list_reverseiterator object at 0x7f93159ded00>