Manual
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).
直译
返回一个反向迭代器,seq必须是一个具有__reversed__()方法或支持序列协议的对象(__len__()和__getitem__()的整数参数起始为0)。
实例
>>> a = [i for i in range(1, 11, 2)]
>>> a
[1, 3, 5, 7, 9]
>>> b = reversed(a)
>>> b
<list_reverseiterator object at 0x000001D2EEC1FC88>
>>> for i in b:
print(i)
9
7
5
3
1
Note
返回的迭代器对象具有常用的迭代器方法,例如:__next__(self, /),__iter__(self, /)等。