As I know, sorted already returns a "list"

Nice way of reformating, Like!

I think points should be rounded/flored, but ok. xD

thanks for the comment . I have corrected

Your code doesn't work. You're inserting a \n character at the beginning of the string that you're returning, which is incorrect.

code works but tests don't pass

Approved

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This is what I thought: if matched a invalid char then it means u have to return false.

That is one line?

Oooh, so that's what it meant. I guess "rounded to 1 decimal place" is easier to understand.