code: def assemble_phi5_author_filepaths():
      
      plaintext_dir_rel = '~/cltk_data/latin/text/phi5/plaintext/'
      plaintext_dir = os.path.expanduser(plaintext_dir_rel)
      filepaths = [os.path.join(plaintext_dir, x + '.TXT') for x in PHI5_INDEX]
      return filepaths
docs: Reads PHI5 index and builds a list of absolute filepaths.