text: import os
  import sys
  
  def get_path_to_input_files():
      """Return absolute path of 'files' folder."""
      try:
          path = os.getcwd() + "/app/files" # Relative path to working dir expected to contain input files
      except FileNotFoundError:
          print("Folder named 'files' not found.")
          sys.exit()
      else:
          return path
  
  def read_file(file_path,split_on,drop_list=None):
      """Read file_name line by line. Split each line based on split_on argument and drop list items that equal items in the drop_list.
      drop_list is optional and defaults to None.
      Return a list containing list of the extracted data."""
      content = []            # Empty list to store contents of file being read
      try:          
          file = open(file_path)
      except FileNotFoundError:
          print(f"File named '{file_path}' not found.")
          sys.exit()
      else:
          while (line := file.readline().rstrip()):
              if drop_list != None:
                  for drop in drop_list:
                      line = line.replace(drop,"")
              fields = line.split(split_on)
              content.append(fields)
          file.close()
          return content