Problem 1: Write an iterator class reverse_iter, that takes a list and iterates it from the reverse direction. https://anandology.com/python-practice-book/iterators.html

reverse_iter.py

class reverse_iter:
    def __init__(self, l):
        self.l = l[::-1]
        self.i = 0

    def __iter__(self):
        return self

    def __next__(self):
        if self.i < len(self.l):
            i = self.i
            self.i += 1
            return self.l[i]
        else:
            raise StopIteration()
    def next(self):
        return self.__next__()