John Carmona wrote: > After quite a while away from Python, I have decided to re-study Python. I > am interested to learn Python to support my love for Cryptography. I have a > first very easy question (did some search on Google but could not find > anything helpful). I realise that this is very basic so be gentle with me. > > If i insert the following script: > > ------------------------------------------------------------------------------------------------- > odd =1 > >>>> while odd <=100: >>>> > if (odd%2)==1: > print odd > odd = odd + 1 > ------------------------------------------------------------------------------------------------- > I get a list of the odd numbers from 1 to 99. But now if I wanted to add > those number together (i.e. 1 + 3 +5 + 7 etc.), what line of coding should I > include? I have tried to add "odd + odd" but it did not work. In advance > thanks. > Odd is the variable you're iterating over. If you added odd+odd it would just do something weird, like counting 1 2 4 8 16 32 etc. Uh... What you need to do is have a separate variable that stores the sums and add to that each time. The problem is since you're iterating over odd, you're changing what the 'if (odd%2)' statement is seeing, if you change odd +1 to odd+odd. Hope that helps, -Luke > If anyone could direct me to some site where python is associated with > Cryptography I would be very grateful. Many thanks > JC > > _________________________________________________________________ > Be the first to hear what's new at MSN - sign up to our free newsletters! > http://www.msn.co.uk/newsletters > > _______________________________________________ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > >
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