Solución a http://orsaibonsai.com/blog/post/gran_7

gistfile1.py

import itertools

mylist = list(itertools.permutations('123456789'))

for (a,b,c,d,e,f,g,h,i) in mylist:
	  myresul1=(float(a)*10+float(b))/(float(c)*100+float(d)*10+float(e))
	  myresul2=(float(f)*10+float(g))/(float(h)*10+float(i))
	  if myresul1+myresul2==float(7):
	  	print 'Found it'+a+b+c+d+e+f+g+h+i