digital_metadata.py 文件源码

def _populate_data(self, ret_dict, obj, name):
        """Read data recursively from an HDF5 value and add it to `ret_dict`.

        If `obj` is a dataset, it is added to `ret_dict`. If `obj` is a group,
        a sub-dictionary is created in `ret_dict` for `obj` and populated
        recursively by calling this function on all of  the items in the `obj`
        group.

        Parameters
        ----------

        ret_dict : OrderedDict
            Dictionary to which metadata will be added.

        obj : h5py.Dataset | h5py.Group
            HDF5 value from which to read metadata.

        name : valid dictionary key
            Dictionary key in `ret_dict` under which to store the data from
            `obj`.

        """
        if isinstance(obj, h5py.Dataset):
            # [()] casts a Dataset as a numpy array
            ret_dict[name] = obj[()]
        else:
            # create a dictionary for this group
            ret_dict[name] = {}
            for key, value in obj.items():
                self._populate_data(ret_dict[name], value, key)