4a6c3c56f54bf1f85f35aaae76dc76e7cf567b8f,pandas/core/aggregation.py,,aggregate,#Any#Any#,531

Before Change

        // no selection
        else:

            try:
                result = _agg(arg, _agg_1dim)
            except SpecificationError:

                // we are aggregating expecting all 1d-returns
                // but we have 2d
                result = _agg(arg, _agg_2dim)

        // combine results

        def is_any_series() -> bool:
            // return a boolean if we have *any* nested series
            return any(isinstance(r, ABCSeries) for r in result.values())

After Change

        from pandas.core.reshape.concat import concat

        if selected_obj.ndim == 1:
            // key only used for output
            colg = obj._gotitem(obj._selection, ndim=1)
            results = {key: colg.agg(how) for key, how in arg.items()}
        else:
            // key used for column selection and output
            results = {
                key: obj._gotitem(key, ndim=1).agg(how) for key, how in arg.items()
            }

        // set the final keys
        keys = list(arg.keys())

        // combine results

Instances