5. Get an input from the user that is a file name with an extension (e. g., "myfile. ipynb" or "myfile. txt"). Print only the characters that follow the "." in the file name (e. g., "ipynb" and "txt"). 6. Ask the user for 5 numbers. Save these as items in a list. Use a repetition structure to save the highest and lowest of these numbers as two variables, and only loop through the list one time.