function that counts...

[superpollo]

Steven D'Aprano ha scritto:
> On Wed, 19 May 2010 21:58:04 +0200, superpollo wrote:
> 
>> ... how many positive integers less than n have digits that sum up to m:
>>
>> In [197]: def prttn(m, n):
> 
> Does the name "prttn" mean anything? I'm afraid I keep reading it as a 
> mispelling of "print n".

pArtItIOn

> 
> 
> [...]
>>          s = str(i)
>>          sum = 0
>>          for j in range(len(s)):
>>              sum += int(s[j])
> 
> Rather than iterating over an index j = 0, 1, 2, ... and then fetching 
> the jth character of the string, you can iterate over the characters 
> directly. So the inner loop is better written:
> 
> for c in s:
>     sum += int(c)

d'oh! some day i will learn to speak pythonese!

thanks

bye