Least Cost Formulation with Python
Project description
plend
Plend is a library for performing least cost formulation with Python. Plend uses PuLP to solve formula constraint problems.
Installation
$ pip install git+https://github.com/bherbruck/plend
or
$ pip install plend
Examples
from plend import Formula, Ingredient, Nutrient from plend.presets.poultry import * # initialize formula starter = Formula(name='Starter', batch_size=100) # add ingredient constraints from poultry presets starter.add_ingredient(corn, minimum=1) starter.add_ingredient(soybean_meal) starter.add_ingredient(oil, maximum=5) starter.add_ingredient(limestone) starter.add_ingredient(meat_meal, maximum=10) # add nutrient constraints from poultry presets starter.add_nutrient(energy, minimum=3000) starter.add_nutrient(protein, minimum=20) starter.add_nutrient(fiber) starter.add_nutrient(calcium, minimum=4, maximum=5) # optimize the formula starter.optimize() # output the formula to a csv print(starter.to_csv())
outputs:
library_name | formula_name | formula_code | formula_cost | formula_status | item_type | item_name | item_code | item_amount | item_minimum | item_maximum |
---|---|---|---|---|---|---|---|---|---|---|
default | Starter | 67.16379819 | Optimal | ingredient | Corn | 54.882934 | 1 | |||
default | Starter | 67.16379819 | Optimal | ingredient | Soybean Meal | 22.674542 | 0 | |||
default | Starter | 67.16379819 | Optimal | ingredient | Oil | 4.1552541 | 0 | 5 | ||
default | Starter | 67.16379819 | Optimal | ingredient | Limestone | 8.2872701 | 0 | |||
default | Starter | 67.16379819 | Optimal | ingredient | Meat Meal | 10.0 | 0 | 10 | ||
default | Starter | 67.16379819 | Optimal | nutrient | Energy | 3000.0000038 | 3000 | |||
default | Starter | 67.16379819 | Optimal | nutrient | Protein | 20.00000021 | 20 | |||
default | Starter | 67.16379819 | Optimal | nutrient | Fiber | 2.05230961 | 0 | |||
default | Starter | 67.16379819 | Optimal | nutrient | Calcium | 4.0000000154 | 4 | 5 |
Project details
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