How to decompress a file and print out the rle (run length encoding) using python.

Question

Say if a file had the text aaaaaa then you read the file and decompress it - it would print out 04a, is there a possible way on how to do that?

Answer 1

Why 04a ?

An example of run length encoding:

from itertools import groupby

s = "aaaddd1111111000011000011111000000000kkkkkddddddd"
rle = [(c,len([*g])) for c,g in groupby(s)]
print(rle)

[('a', 3), ('d', 3), ('1', 7), ('0', 4), ('1', 2), ('0', 4), ('1', 5), ('0', 9), ('k', 5), ('d', 7)]