ISSUE

• There should be fixed and sample tests where a column contains something like 1.2.3 to invalidate solutions like this

• Python new test framework should be used

• Excessive printing should be removed

SUGGESTION

• Random tests should have a dedicated group block to generate the edge case mentioned above, mixing with other non-digit string inputs in different columns would be even better to invalidate any solutions that check only the first row corresponding column rather than all rows.

Python 3.8 should be enabled.

.

Python 3 should be enabled.

If your code times out your code does not "work" or "run fine".

• more fixed tests added
• random tests added
• performance requirement added (this way it will be a little closer of its current ranking)
• made python 3 compatible

All is ready. Still 6 days to wait before the edit panel is accessible...

"To be continued"

• not enough tests
• needs random tests too!

EDIT: I'm preparing all the stuff needed. If this issue is not resolved two weeks ahead from now, please poke at me if you're reading this.

If you do it with math rather than building a larger Array each time you can manage it.

Sweet, a nice little introduction to data science! :)

No! Make it the "Slightly Less Rudimentary Kata"! :D

I think I will leave it be for now.
Could always do a second version with that and a few other things depending how people like this one.

Well then implement it before anyone has solved the kata!

That's an interesting idea!
Might be a nice addition actually...