[Tutor] Sequences of letter

[Stefan Behnel]

Juan Jose Del Toro, 12.04.2010 07:12:
> I wan to write a
> program that could print out the suquence of letters from "aaa" all the way
> to "zzz"  like this:
> aaa
> aab
> aac
> ...
> zzx
> zzy
> zzz
>
> So far this is what I have:
> letras =
> ["a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","x","y","z"]

See the 'string' module. Also, note that you do not need a list here, you 
can iterate over a simple string value as well.


> letra1 = 0
> letra2 = 0
> letra3 = 0
> for i in letras:
>      for j in letras:
>          for k in letras:
>              print letras[letra1]+letras[letra2]+letras[letra3]
>              letra3=letra3+1
>      letra2=letra2+1
> letra1=letra1+1

Note that the above is highly redundant. Try printing the values of i, j 
and k during the loop, you will see why.

Stefan