def set_simulation_parameters(self, params_dict=None):
        """
        Overrides all of the default sim parameters
        with the ones in the dictionary
        Args:
            params_dict: keys are param names, values are expected values to use

        Returns:
            None, sets self.simulation_params

        """
        if not self.simulation_parameters:
            self.simulation_parameters = parameters.make_pars(set_prognoses=True, prog_by_age=True)
        if params_dict:
            self.simulation_parameters.update(params_dict)
        pass
 def setUp(self):
     super().setUp()
     self.sim = Sim()
     self.pars = parameters.make_pars()
     self.is_debugging = False