def _assert_string_not_empty(string, desc):
  _assert_condition(string, 'The %s is missing.' % desc)
Wrap callbacks with this if they are used on asynchronous requests.
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/datastore/cloud_datastore_validator.py/_assert_string_not_empty--crossover with--dataset/ETHPy150Open jbalogh/tornado-websocket-client/websocket.py/WebSocket._async_callback