Hello,
working with a recent version of omero-py, there is now a nicer looking output for images.

But for anything else than an image, this produces errors.
The issue in the issue is that they can easily be misinterpreted as mistakes of the user. But the error only comes from _repr_html_ when an object is shown in Jupyter.

The issue is that _repr_html_ here is implemented for the class BlitzObjectWrapper, but the function image_to_html only works for images:
https://github.com/ome/omero-py/pull/394/files#diff-a017e360f546e1f25f0118e5c18fd4b4842531636af7903c9c6556309c6d13fbR294-R300

 def _repr_html_(self):
      """
      Returns an HTML representation of the object. This is used by the
      IPython notebook to display the object in a cell.
      """
      return image_to_html(self)

I am in favor of using more HTML representations for other kinds of objects, but we should first fix that issue.

@jo-mueller