def __getitem__()

in opensearch_dsl/search.py [0:0]

• 16 lines of code
• 11 McCabe index (conditional complexity)

    def __getitem__(self, n):
        """
        Support slicing the `Search` instance for pagination.

        Slicing equates to the from/size parameters. E.g.::

            s = Search().query(...)[0:25]

        is equivalent to::

            s = Search().query(...).extra(from_=0, size=25)

        """
        s = self._clone()

        if isinstance(n, slice):
            # If negative slicing, abort.
            if n.start and n.start < 0 or n.stop and n.stop < 0:
                raise ValueError("Search does not support negative slicing.")
            # OpenSearch won't get all results so we default to size: 10 if
            # stop not given.
            s._extra["from"] = n.start or 0
            s._extra["size"] = max(
                0, n.stop - (n.start or 0) if n.stop is not None else 10
            )
            return s
        else:  # This is an index lookup, equivalent to slicing by [n:n+1].
            # If negative index, abort.
            if n < 0:
                raise ValueError("Search does not support negative indexing.")
            s._extra["from"] = n
            s._extra["size"] = 1
            return s