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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"property has list_value and don't want to index will raise exception","articleBody":"if a property is `list_value` and the property name is included in `exclude_from_indexes` \nthe following exception will raise.\n\nThe protobuf file has describe this behavior\n\n```\n// A list value.\n  // Cannot contain another list value.\n  // Cannot also have a meaning and indexing set.\n  repeated Value list_value = 7;\n```\n\nhttps://github.com/GoogleCloudPlatform/google-cloud-datastore/blob/v1beta2-rev1-2.1.0/proto/datastore_v1.proto#L123\n\n```\n File \"/usr/local/lib/python2.7/dist-packages/gcloud/datastore/entity.py\", line 244, in save\n    exclude_from_indexes=self.exclude_from_indexes())\n  File \"/usr/local/lib/python2.7/dist-packages/gcloud/datastore/connection.py\", line 425, in save_entity\n    result = self.commit(dataset_id, mutation)\n  File \"/usr/local/lib/python2.7/dist-packages/gcloud/datastore/connection.py\", line 329, in commit\n    datastore_pb.CommitResponse)\n  File \"/usr/local/lib/python2.7/dist-packages/gcloud/datastore/connection.py\", line 81, in _rpc\n    data=request_pb.SerializeToString())\n  File \"/usr/local/lib/python2.7/dist-packages/gcloud/datastore/connection.py\", line 59, in _request\n    raise Exception('Request failed. Error was: %s' % content)\nException: Request failed. Error was: A Value containing a list_value cannot specify indexed.\n```\n\nAn example\n\n``` python\nentity = Dataset(dataset, kind, exclude_from_indexes=('a',))\nentity['a'] = [1,2,3]\nentity.save()\n```\n","author":{"url":"https://github.com/lucemia","@type":"Person","name":"lucemia"},"datePublished":"2014-12-02T08:56:21.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":9},"url":"https://github.com/398/google-cloud-python/issues/398"}