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diet2.py
#!/usr/bin/env python3.7 # Copyright 2021, 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)