The supplied setup writes a separate supply_rules.py module into the browser filesystem. Its box_count function rounds up packs of four; you do not need to write or install the module. Import it into main.py and use it in your own function. In a regular project the helper would live as a neighboring .py file rather than being generated at run time.
box_count from supply_rules after the supplied setup.order_boxes(items) to return the imported helper’s result for items.Edit main.py, press Run to inspect the result, then Submit to check your change.
Use from supply_rules import box_count; then call box_count(items).