Refactor functional programming: change _calculate_avg_non_heating_usage to pass all variables

[ethanstrominger]

• [ ] Change _calculate_avg_non_heating_usage () => to

  avg_non_heating_usage = _get_avg_non_heating_usage (      
  fuel_type,
  avg_summer_usage,
  dhw_input.estimated_water_heating_efficiency, 
  dhw_input.number_of_occupants,
  stand_by_losses, 
  heating_system_efficiency
  )

  Part 1 - parameters

  • [ ] Add parameters and pass parameters to _get_avg_non_heating_usage
  • [ ] Change self. for any of these variables to get rid of the self. Part 2 - return variable
  • [ ] Modify _get_avg_non_heating_usage to return a value
  • [ ] Include the value in the return home