Sorting ID with first and last name Arrays

[volcano63]

And if the first name shows more than once in the first list? We have a beautiful zip for meshing lists

for first_name, last_name in zip(fristName, lastName):

I am not sure if 2 lists were a given - or it's OPs idea, but using dict the way you suggested here is definitely wrong

Well, then educate me brother. Why is using dict wrong? - in this case.

I usually try to be polite - but since I'm a brother, let me treat you like a family . 

You gave a useless advice, that adds nothing to the solution.

1. For starters, dict has unique keys - thus my hint about more than once, which you missed.
   
2. Suggesting manually writing dictionary instead of two lists has no merit   - OP could have written full name from the start.
   
3. You cant apply intto list slice - and why are you creating a list of strings if you want to sort it by integer component?
   

You suggested "solution" is a mess - so litter box is suggested