But, I'm returning true or false right? On Sat, Sep 12, 2009 at 11:32 AM, MRAB <pyt...@mrabarnett.plus.com> wrote:
> Someone Something wrote: > >> Project euler (in case you don't know: projecteuler.net < >> http://projecteuler.net>) >> >> I'm trying to do the third one and here's my current code: >> >> 1 def checkPrime (x): >> 2 factors=2; >> 3 while factors<=x: >> 4 if x==factors: >> 5 return True; >> 6 elif x%factors==0: >> 7 return False; >> 8 elif x%factors!=0: >> 9 factors=factors+1; >> > > You're not returning 'factors', so the function will return None. > > > 10 >> 11 factorl=[]; >> 12 factors=600851475142; >> 13 >> 14 while factors != 1: >> 15 if 600851475143%factors==0: >> 16 if checkPrime(factors)==True: >> 17 print factors; >> 18 else: >> 19 factors=factors-1; >> 20 >> 21 else: >> 22 factors=factors-1; >> 23 >> >> And it just gets frozen when I run it. I put a >> >> print "Loop completed" >> >> in one of the loops and it showed up just fine. So, there are two >> possibilities: >> 1. Its looping in the trillions and taking a while >> 2. I have a forever loop somewhere >> >> > -- > http://mail.python.org/mailman/listinfo/python-list >
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