code: def to_df(self)->None:
          "Create `pd.DataFrame` containing `items` from `self.x` and `self.y`."
          return pd.DataFrame(dict(x=self.x._relative_item_paths(), y=[str(o) for o in self.y])f to_df(self)->None:
          "Create `pd.DataFrame` containing `items` from `self.x` and `self.y`."
          return pd.DataFrame(dict(x=self.x._relative_item_paths(), y=[str(o) for o in self.y]))
docs: Create `pd.DataFrame` containing `items` from `self.x` and `self.y`.