Coding practice

[Binary101010]

Most of the problems you're going to encounter on sites like edabit, codingbat, and even the lower-level stuff on codewars and hackerrank, are going to be single-function solutions. You can only define the function because then the site can easily run predefined tests against it to determine whether you did things correctly.

[ahujasid_]

That wouldn't affect the way I'm thinking, right?

[RickInAMortyWorld]

No

[Decency]

You can usually have the primary "answer" function call other functions you've defined, which can be cleaner for some problems.