Method insert

lib/sqlalchemy/ext/associationproxy.py:1577–1578

(self, index: int, value: _T)

            self.append(v)

    def insert(self, index: int, value: _T) -> None:
        self.col[index:index] = [self._create(value)]

    def pop(self, index: int = -1) -> _T:
        return self.getter(self.col.pop(index))