def __getitem__(self, index: int) -> Any:
        """Get item from all datasets.

        Args:
            index: index to value from all datasets

        Returns:
            list: list of value in every dataset
        """
        dcts = [x[index] for x in self.datasets]
        dct = merge_dicts(*dcts)

        if self.dict_transform is not None:
            dct = self.dict_transform(dct)

        return dct
Get item from all datasets.

        Args:
            index: index to value from all datasets

        Returns:
            list: list of value in every dataset
        
catalyst/contrib/data/dataset.py