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diet2.py
#!/usr/bin/env python3.11
# Copyright 2024, Gurobi Optimization, LLC
# Separate the model (dietmodel.py) from the data file (diet2.py), so
# that the model can be solved with different data files.
#
# Nutrition guidelines, based on
# USDA Dietary Guidelines for Americans, 2005
# http://www.health.gov/DietaryGuidelines/dga2005/
import dietmodel
import gurobipy as gp
from gurobipy import GRB
categories, minNutrition, maxNutrition = gp.multidict(
{
"calories": [1800, 2200],
"protein": [91, GRB.INFINITY],
"fat": [0, 65],
"sodium": [0, 1779],
}
)
foods, cost = gp.multidict(
{
"hamburger": 2.49,
"chicken": 2.89,
"hot dog": 1.50,
"fries": 1.89,
"macaroni": 2.09,
"pizza": 1.99,
"salad": 2.49,
"milk": 0.89,
"ice cream": 1.59,
}
)
# Nutrition values for the foods
nutritionValues = {
("hamburger", "calories"): 410,
("hamburger", "protein"): 24,
("hamburger", "fat"): 26,
("hamburger", "sodium"): 730,
("chicken", "calories"): 420,
("chicken", "protein"): 32,
("chicken", "fat"): 10,
("chicken", "sodium"): 1190,
("hot dog", "calories"): 560,
("hot dog", "protein"): 20,
("hot dog", "fat"): 32,
("hot dog", "sodium"): 1800,
("fries", "calories"): 380,
("fries", "protein"): 4,
("fries", "fat"): 19,
("fries", "sodium"): 270,
("macaroni", "calories"): 320,
("macaroni", "protein"): 12,
("macaroni", "fat"): 10,
("macaroni", "sodium"): 930,
("pizza", "calories"): 320,
("pizza", "protein"): 15,
("pizza", "fat"): 12,
("pizza", "sodium"): 820,
("salad", "calories"): 320,
("salad", "protein"): 31,
("salad", "fat"): 12,
("salad", "sodium"): 1230,
("milk", "calories"): 100,
("milk", "protein"): 8,
("milk", "fat"): 2.5,
("milk", "sodium"): 125,
("ice cream", "calories"): 330,
("ice cream", "protein"): 8,
("ice cream", "fat"): 10,
("ice cream", "sodium"): 180,
}
dietmodel.solve(categories, minNutrition, maxNutrition, foods, cost, nutritionValues)
