converting letters to numbers

[Rotwang]

On 14/10/2013 06:02, Steven D'Aprano wrote:
> On Sun, 13 Oct 2013 20:13:32 -0700, Tim Roberts wrote:
>
>> def add(c1, c2):
>>       % Decode
>>       c1 = ord(c1) - 65
>>       c2 = ord(c2) - 65
>>       % Process
>>       i1 = (c1 + c2) % 26
>>       % Encode
>>       return chr(i1+65)
>
> Python uses # for comments, not %, as I'm sure you know. What language
> were you thinking off when you wrote the above?

Maybe TeX?