code: def import_key(keyid):
      
      try:
          return fetch_import_key(keyid)
      except GPGKeyError as e:
          error_out("Could not import key: {}".format(str(e)))
docs: Import a key, either ASCII armored, or a GPG key id.
  
      @param keyid: the key in ASCII armor format, or a GPG key id.
      @raises SystemExit() via sys.exit() on failure.