def __get__(self, model_instance, model_class):
    if model_instance is None:
      return self
    return self.__value_function(model_instance)
Creates the temporary sub-directories needed by the current run.
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/db/__init__.py/ComputedProperty.__get__--crossover with--dataset/ETHPy150Open GoogleCloudPlatform/PerfKitBenchmarker/perfkitbenchmarker/temp_dir.py/CreateTemporaryDirectories