code: def _init_file(self):
          
          self.keyring_key = self._get_new_password()
          # set a reference password, used to check that the password provided
          #  matches for subsequent checks.
          self.set_password('keyring-setting',
                            'password reference',
                            'password reference value')
          self._write_config_value('keyring-setting',
                                   'scheme',
                                   self.scheme)
          self._write_config_value('keyring-setting',
                                   'version',
                                   self.version)
docs: Initialize a new password file and set the reference password.