Method __getitem__

dask/dataframe/dask_expr/_expr.py:162–166

(self, other)

            raise

    def __getitem__(self, other):
        if isinstance(other, Expr):
            return Filter(self, other)
        else:
            return Projection(self, other)  # df[["a", "b", "c"]]

    def __bool__(self):
        raise ValueError(