resetting a generator

[Gribouillis]

I would define instead a class that obeys the iterator protocol, that is to say it has __iter__() and __next__() methods and the latter raises StopIteration when the iterator is exhausted. For example

class WalkList:
    def __init__(self, seq):
        if not isinstance(seq, list):
            raise TypeError('list argument expected, got', type(seq))
        self.seq = seq
        self.reset()
        
    def reset(self):
        self.ite = iter(self.seq)
        
    def __next__(self):
        return next(self.ite)
    
    def __iter__(self):
        return self
    
walk = WalkList(list(range(7)))

r = True
for item in walk:
    if r and item == 3:
        walk.reset()
        r = False
        continue
    print(item)

Output:
λ python3 paillasse/genstate.py
0
1
2
0
1
2
3
4
5
6