def _unlock(self):
self.keyring_key = getpass.getpass(<EOL>'<STR_LIT>')<EOL>try:<EOL><INDENT>ref_pw = self.get_password('<STR_LIT>', '<STR_LIT>')<EOL>assert ref_pw == '<STR_LIT>'<EOL><DEDENT>except AssertionError:<EOL><INDENT>self._lock()<EOL>raise ValueError("<STR_LIT>")<EOL><DEDENT>
Unlock this keyring by getting the password for the keyring from the
user.