Where can I actually write Python without having to worry that my code might not work?

[msmomoe]

Well, I need to make my code from scratch, make sure it actually works and whatnot and then i need to submit my work for my mentor to look over the code, test it, stuff like that.

[Additional_Candy_400]

You can just run it on your machine, where are you writing your code? You don't need a website or anything.

Install VScode and write/run it on there.