from itertools import chain count cycle repeat from operator import ad

from itertools import chain, count, cycle, repeat
from operator import add
fizz = cycle(chain(['Fizz'], repeat('', 2)))
buzz = cycle(chain(['Buzz'], repeat('', 4)))
fzbz = map(add, fizz, buzz)
for fb, n in zip(fzbz, count()):
    print(fb or n)