converting letters to numbers

[Mark Lawrence]

On 08/10/2013 15:28, kjakupak at gmail.com wrote:
> I have to define a function add(c1, c2), where c1 and c2 are capital letters; the return value should be the sum (obtained by converting the letters to numbers, adding mod 26, then converting back to a capital letter).
>

I'd say the requirement is lacking in that no encoding is specified.

> All I have so far is:
>
> def add(c1, c2):
>      ord(c1) - ord('a') + 1
>      ord(c2) - ord('a') + 1
>
> I know I need to use ord and chr, just not sure how.
>

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-- 
Roses are red,
Violets are blue,
Most poems rhyme,
But this one doesn't.

Mark Lawrence