Last listing don't match the script from the repo

[vfarafonov]

The last listing in the Github Pages article does not match the content of the buchheim.py file. For example:

• in the article the second_walk function does not have min param in the signature. But it is passed when the function is recursively invoked. Also, this function misses some other logic.
• there is no third_walk function and its usage in the listing. (I know that it could be excluded intentionally because it just shifts all items. Mentioning JIC)

P.S. Thanks for the article and the repo. This is very helpful even though the content was created a very long time ago! 🚀

[llimllib]

Thanks! glad you found it useful.

I wrote it 15 years ago so I don't exactly remember why that is - I've updated the code listing but I didn't check to see if it makes sense with the surrounding text 🤷‍♂️