This is the solution for Advent of Code 2025 Day 9 in Python.
I'll be posting my solutions each day so please follow along!
github: https://github.com/DylanTech2025/AdventOfCode/tree/main/2025
reference : https://www.youtube.com/watch?v=_S_OkxY_k8M
0:00 Intro
0:43 Part 1
1:19 Part 1 Code
4:08 Part 2
6:58 Part 2 Setup
10:28 Compression Explanation
12:40 Part 2 Code
36:42 Recap
18:35 Outro
#adventofcode #python
