feiz

import itertools
for sei, na in itertools.izip(range(1, 1001), itertools.cycle("ABCDEFGHIJKLMNOPQRSTUVWXYZ")):
    print(u"{sei}反田{na}".format(sei=sei, na=na))

feiz

from itertools import *

for x in izip(cycle(['', '', 'fizz']), cycle(['', '', '', '', 'buzz']), count(1)): 
    print x[0] + x[1] or x[2]

feiz

# ↓のように、yabai_funcをモジュールグローバルで呼んでる状態を直す
#yabai_obj = yabai_func()

def yabai_obj():
    global yabai_obj
    obj = yabai_func()
    yabai_obj = lambda: obj
    return obj