Find middle of File using PYTHON: This is the prompt and my code for the first part, i only need help writing the MIDDLE, MIDDLE FLAG with input options, and IF statement (less than 2 times number of lines to skip output entire file)

Write a complete PYTHON program with prompts for the user to get the main text file (checks that it exists, and if not, output an error message and stop), for any possible flags (flags allows the user to change the default conditions or to use the defaults, and for any other input that this program may need from the user: split has an option of naming the smaller files. Your program will open the input file once only and using seek(0) to avoid re-opening the file will cost all points

MY CODE FOR OPENING AND ERROR CHECK:

----------------REQUIREMENTS FOR MIDDLE "function": ----------------------

middlelist the middle lines of the file by skipping the first 5 lines (default) and skipping the last 5 lines (default) in order of the given text file flag: Comment If the file has less than 2 times the number of lines to skip, output the entire file. change the number of lines to skip at the top and bottom