def find_foods_worked_off(self, e):
foods = Food.all()
foods.filter("calories_left >", 0)
res = []
calories = int(calc_exercisecalories(e.burnrate, e.duration))
for food in foods:
res.append(food)
if food.calories_left > calories:
food.calories_left -= calories
food.put()
break
else:
calories -= food.calories
food.calories_left = 0
food.put()
return res
