I am at the very beginning of my programming course (career change) so bear with me if this is simple. I am trying to check if the users input contains numbers in the middle of the string, as they must come at the end. E.g XXX55 is valid, XXX5X is not valid.

s = input("Plate: ").upper()

for i in s:
  if i.isdigit():
    if i+1.isalpha():
       print("Invalid")

This is what I tried but it doesn’t work I want it to check if each character is a digit and if if its true then check if the next character is an alphabet.