Project Euler #12 in Python.

problem012.py

#!/usr/bin/env python
#
# Copyright (C) 2013, Adrien Tétar. All Rights Reserved.
#
def triangleNumber(rank):
    res = 0
    for i in range(1, rank+1):
        res += i
    return res

def sumFactors(triangle):
    res = 1 # t%1=0
    for i in range(2, triangle+1):
        if (triangle%i == 0):
            res += 1
    return res

cur = 0
while (sumFactors(triangleNumber(cur)) <= 500):
    cur += 1
print(triangleNumber(cur))