Method _deduplicate

IPython/core/completer.py:3738–3750

(
        matches: Sequence[AnyCompletion],
    )

    @staticmethod
    def _deduplicate(
        matches: Sequence[AnyCompletion],
    ) -> Iterable[AnyCompletion]:
        filtered_matches: dict[str, AnyCompletion] = {}
        for match in matches:
            text = match.text
            if (
                text not in filtered_matches
                or filtered_matches[text].type == _UNKNOWN_TYPE
            ):
                filtered_matches[text] = match

        return filtered_matches.values()

    @staticmethod
    def _sort(matches: Sequence[AnyCompletion]):