To the infibity and beyond..

infib.py

from __future__ import division

b = 0
a = 1

i = 2
j = 0
t = (139583862445/1000000)
while(i < 1024):
	
  tmp = a + b
  b = a
  a = int(str(tmp)[-10:])
	
  if i % 1000000 == 0:
    j = j+1
    print (100/t)*j
  
  i = i+1

print i, str(a + b)[-10:]