def InsertComment(self, photo_or_uri, comment):
    comment = gdata.photos.CommentEntry(content=atom.Content(text=comment))
    if isinstance(photo_or_uri, (str, unicode)):
      post_uri = photo_or_uri # it's a uri
    elif hasattr(photo_or_uri, 'GetEditMediaLink'):
      post_uri = photo_or_uri.GetPostLink().href
    try:
      return self.Post(data=comment, uri=post_uri,
        converter=gdata.photos.CommentEntryFromString)
    except gdata.service.RequestError, e:
      raise GooglePhotosException(e.args[0])
An argument of fields=() to fields_for_model should return an empty dictionary
dataset/ETHPy150Open acil-bwh/SlicerCIP/Scripted/attic/PicasaSnap/gdata/photos/service.py/PhotosService.InsertComment--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/tests/regressiontests/model_forms_regress/tests.py/EmptyFieldsTestCase.test_empty_fields_to_fields_for_model