Function find_duplicate

mypy/semanal.py:8239–8247

If the list has duplicates, return one of the duplicates. Otherwise, return None.

(list: list[T])

def find_duplicate(list: list[T]) -> T | None:
    """If the list has duplicates, return one of the duplicates.

    Otherwise, return None.
    """
    for i in range(1, len(list)):
        if list[i] in list[:i]:
            return list[i]
    return None


def remove_imported_names_from_symtable(names: SymbolTable, module: str) -> None: