I currently have the need for a certain type of Iterator / generator (not actually sure which is the appropriate term) that will generate a character sequence such as the following:
and so on
So for every iteration through the alphabet it moves to the next place and replaces 'x' and repeats...
I have tried Iterators and generators with Python but cant seem to get this fixed character functionality.
OK, break this down into two problems. I'm cribbing from
for the actual baseN code.
First, generate a sequence of numbers in base 26, encoded a=0, b=1, .. z=25. After an example from "trottler"
def basealpha(num,numerals="abcdefghijklmnopqrstuvwxyz"): return ((num == 0) and "0" ) or ( basealpha(num // 26, 26).lstrip("0") + numerals[num % 26])
Loop through this, and then right pad out the string with 'x' to a length of four.
The problem I see on looking at this is that 'x' serves double duty, and you'll have a hard time telling what 'aaxx' means, since it could show up in several sequences:
aaxx aayx aazx
aaxx abxx acxx