Script to solve the problem described in http://orsaibonsai.com/blog/post/gran_7 XX/XXX + XX/XX = 7 With numbers from 1 to 9, fill all the slots without repeating numbers to sum 7

gran_7

#! /usr/bin/env python
# //  XX/YYY + XX/YY = 7
import random

numbers = [1,2,3,4,5,6,7,8,9]
res = 0
target = 7

def pop_random (num):
    res = []
    for i in range(0,num):
        # Select a random number and delete it
        value = random.sample(numbers, 1)
        numbers.pop(numbers.index(value[0]))
        res.append(value[0])
    return res

def list_to_num(list):
    base = 10
    res = 0
    for i in list:
        res *= base
        res += i
    return res

def equal(num1, num2):
    # As we are dealing with floats, define an equal function
    return abs(num1 - num2) < 0.000001

def test_solution(a, b, c, d):
    temp1 = float(a)/float(b)
    temp2 = float(c)/float(d)
    res = float(temp1) + float(temp2)
    return float(res)


while not equal(res, target):
    res1 = pop_random(2)
    res1 = list_to_num(res1)
    res2 = pop_random(3)
    res2 = list_to_num(res2)

    res3 = pop_random(2)
    res3 = list_to_num(res3)
    res4 = pop_random(2)
    res4 = list_to_num(res4)

    res = test_solution(res1, res2, res3, res4)
    print res
    # Re-populate numbers
    numbers = [1,2,3,4,5,6,7,8,9]
print res1, res2, res3, res4

Se puede hacer mucho más fácil, no? :P

https://gist.github.com/apoz/7507165

Hasta apenas hoy lo voy viendo, definitivamente mucho más fácil :)