#!/usr/bin/env python3
class Obj():
def __init__(self, word):
self.word = word
def __iter__(self):
for l in self.word:
yield l
obj = Obj('sergey')
it = iter(obj)
print(next(it))
print(next(it))
print(next(it))
print(next(it))
print(next(it))
print(next(it))
print(iter(it))