A dumb microbenchmark

spdtest.py

def breakNumber(n):
    return [(n / 1000) % 10,
            (n / 100) % 10,
            (n / 10) % 10,
            n % 10]

def allDifferent(bn):
    def iter(num, idx):
        if idx == 4: return False
        else: return num == bn[idx] or iter(num, idx + 1)
    return not (iter(bn[0], 1) or iter(bn[1], 2) or iter(bn[2], 3))

def allDifferent2(bn):
    return bn[0] != bn[1] and bn[0] != bn[2] and bn[0] != bn[3] \
        and bn[1] != bn[2] and bn[1] != bn[3] \
        and bn[2] != bn[3]

def generateOptions():
    result = []
    for n in xrange(10000):
        bn = breakNumber(n)
        if allDifferent2(bn): result.append(bn)
    return result

import time

def timeit():
    t1 = time.time()
    opts = generateOptions()
    t2 = time.time()
    print opts[:10]
    print t2 - t1
    
timeit()
timeit()
timeit()
timeit()
timeit()