def get_pvalue(self, pvalue):
    try:
      return self._cache.get_pvalue(pvalue)
    except KeyError:
      raise error.PValueError('PValue is not computed.')
Gets the PValue's computed value from the runner's cache.
dataset/ETHPy150Open GoogleCloudPlatform/DataflowPythonSDK/google/cloud/dataflow/runners/direct_runner.py/DirectPipelineRunner.get_pvalue