plend 0.1.4

Description:

plend 0.1.4

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