def rollback(self):
    rpc = self.async_rollback(None)
    if rpc is None:
      return None
    return rpc.get_result()
Synchronous Rollback operation.
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/datastore/datastore_rpc.py/TransactionalConnection.rollback