I need help with this python program I am really new to python and programming in general.

def get_string(prompt): value = ""   value = input(prompt) return value def valid_real(value): try: int(value) return True  except: return False  def get_real(prompt): value = ""   value = input(prompt) while not valid_real(value): print(value, "is not a number. Please try again.") value = input(prompt) return int(value) def numbers_input(row_num, col_num, multi_list): row_num = get_real(input("Input number of rows: ")) col_num = get_real(input("Input number of columns: ")) multi_list = [[0 for col in range(col_num)] for row in range(row_num)] def numbers_output(multi_list, row_num, col_num): for row in range(row_num): for col in range(col_num): multi_list[row][col] = row * col numbers_input() print(multi_list)