wait, what the hell is this?

Nice kata. Initially thought this was too hard for 4 kyu. I changed my mind

ah I did it now
Because I only know the cramer's rule way to calculate it which is slow

Have you noticed that the kata is available in 5 languages? Only Python has numpy, how can the others do? Computing a matrix determinant or solving a linear equation isn't something magical, it's just math. You have to do it by yourself to solve this kata, that's it. And don't expect someone to give you the recipe in discussion.

Calculation of a determinant is perfectly in scope of a 4 kyu task :)

how am I supposed to do this if numpy.linalg.det is not permitted

Can someone explain to me what that for loop is?

What the hell is that

This really is just testing how well do you know about Python syntax because I kept having trouble shortening it instead of test case error

That's even more impressive

how the hell did you guys came up with these solutions?

Bro

You even know how to use key in sorted function

What the
I thought my code was the worse one

I'm surprised that this worked