How to use the lucidity.error function in Lucidity

else:
                        parsed[key] = value

                # Expand dot notation keys into nested dictionaries.
                target = data

                parts = key.split(self._period_code)
                for part in parts[:-1]:
                    target = target.setdefault(part, {})

                target[parts[-1]] = value

            return data

        else:
            raise lucidity.error.ParseError(
                'Path {0!r} did not match template pattern.'.format(path)
            )

'''
        parsed = {}

        match = self._regex.search(path)
        if match:
            data = {}
            for key, value in sorted(match.groupdict().items()):
                # Strip number that was added to make group name unique.
                key = key[:-3]

                # If strict mode enabled for duplicate placeholders, ensure that
                # all duplicate placeholders extract the same value.
                if self.duplicate_placeholder_mode == self.STRICT:
                    if key in parsed:
                        if parsed[key] != value:
                            raise lucidity.error.ParseError(
                                'Different extracted values for placeholder '
                                '{0!r} detected. Values were {1!r} and {2!r}.'
                                .format(key, parsed[key], value)
                            )
                    else:
                        parsed[key] = value

                # Expand dot notation keys into nested dictionaries.
                target = data

                parts = key.split(self._period_code)
                for part in parts[:-1]:
                    target = target.setdefault(part, {})

                target[parts[-1]] = value