import time

_tick2_frame=0
_tick2_fps=20000000 # real raw FPS
_tick2_t0=time.time()

def tick(fps=60):
 global _tick2_frame,_tick2_fps,_tick2_t0
 n=_tick2_fps/fps
 _tick2_frame+=n
 while n>0: n-=1
 if time.time()-_tick2_t0>1:
  _tick2_t0=time.time()
  _tick2_fps=_tick2_frame
  _tick2_frame=0


#test:

while True:
 tick(1) #1 frame per second
 print _tick2_fps #see adjustment in action