This part at the article’s beginning incorrectly links to https://exercism.org/python/csharp/exercises/grains/approaches/bit-shifting (notice the csharp part in the URL and the tracks part missing from it).
It should instead link to https://exercism.org/tracks/python/exercises/grains/approaches/bit-shifting.
[Reporting the issue here as contributions are currently not accepted for the Python track (https://github.com/exercism/python/blob/main/CONTRIBUTING.md).]
