code: def get_subtitle_files(inputfile):
      
      srts = []
  
      for f in inputfile:
          filename = f.split('.')
          filename[-1] = 'srt'
          srt = '.'.join(filename)
          if os.path.isfile(srt):
              srts.append(srt)
  
      if len(srts) == 0:
          print("[!] No subtitle files were found.")
          return False
  
      return srts
docs: Return a list of subtitle files.