code: def POST_evaluate(self) -> None:
          
          for name, value in self._inputs.items():
              result = eval(value)
              self._outputs[name] = objecttools.flatten_repr(result)
docs: Evaluate any valid Python expression with the *HydPy* server
          process and get its result.
  
          Method |HydPyServer.POST_evaluate| serves to test and debug, primarily.
          The main documentation on module |servertools| explains its usage.