main.py

#!/usr/bin/env python
from argparse import ArgumentParser


def main(food_name, provider_name):
    """
    :food_name: name of food
    :provider_name: name of database provider
    """
    if provider_name == "livsmedelsdatabasen":
        from providers.livsmedelsdatabasen import (
            LivsmedelsdatabasenNutritionProvider)
        provider = LivsmedelsdatabasenNutritionProvider()
    else:
        raise ValueError("No such provider: {}".format(provider_name))
    food = provider.get_food_nutrition_facts(food_name)
    if food is None:
        print("food '{}' not found".format(food_name))
        print("Did you mean:")
        print("\n".join(provider.query_food_names(food_name)[:10]))
        return
    for key, field in food.items():
        print("{}: {:~}".format(key.name, field.quantity))


if __name__ == "__main__":
    argparser = ArgumentParser(description="Shows nutrition data")
    argparser.add_argument("food_name", help="Name of food")
    args = argparser.parse_args()
    main(args.food_name, "livsmedelsdatabasen")