Should you really be modifying the input string?

looks cool

I believe it is better to change 'i' into '_' since 'i' is not used after again.

Clever. This avoids the duplicate modifiedStrength formula, circumventing an SQL quirk.

I'm still new to slicing in python. This solution has a couple great examples. Thank you. I appreciate it.

The purpose of these exercices IS NOT to make the shortest code possible you know.
Yeah it is impressive at first, but most of the time it is incomprehensible. I generally prefer writing longer code but make it as clear as possible.

you will know later to never change the inputs given.incase u need to then make a copy of them

The res variable is unnecessary I think since the signature variable can definitely be used for the tribonnaci operation and for the return with some rejigging

Beautiful. Any suggestions(anyone) on getting better at thinking more like this. Having some mental blocks lately.

bruhhhh why i didnt think like this

Omg it dosent

Got it - thanks for clarifying!