Question

Does anyone know the way to create a series of strings in Python that are called consecutively ?

Like ‘ABCDEF’ and then first goes ‘A’, then ‘B’ then ‘C’ etc ? or you could call them from different point, like ‘D’ then ‘E’ then ‘F’ then ‘A’ etc

Answer 1

For something that enables a start point, length, and “rotates” around the end, you can use:
(Take note of the slicing, the .index() command and the handy ascii_uppercase constant)

from itertools import islice, cycle
from string import ascii_uppercase

def func(start='A', length=1, source=ascii_uppercase):
    src = list(source)
    idx = src.index(start)
    cyc = cycle(src[idx:] + src[:idx])
    return ''.join(islice(cyc, length))

>>> func(length=10)
'ABCDEFGHIJ'
>>> func(length=10, start='X')
'XYZABCDEFG'
>>> func()
'A'
>>> func(length=3)
'ABC'