fsum is for floating point numbers, hence the precision issue. When dealing with integers, sum is the function to use.

I'm new to python to. I search in math package and found math.fsum function, thinking as it to be more accurate but it just failed the test for large numbers. Maybe there is some precision issue

yes

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

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

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

TIL theres a built-in sum function.

I'm new to Python...

hahaha

you guys make me feel stupid lol. that's a great motivation to work harder.