code: def get(self, key, *val):
          
          data = self.get_data()
          if data is not None:
              return data.get(key, *val)
          if val:
              return val[0]
          raise KeyError(key)
docs: Get value stored for current running task. Optionally
          you may provide the default value. Raises `KeyError` when
          can't get the value and no default one is provided.