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recipe calculator
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‎recipes/Python/93379_Recipe_Calculator/LICENSE.md‎

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Copyright 2017 Thomas Lehmann
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Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

‎recipes/Python/93379_Recipe_Calculator/README.md‎

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# Welcome to the simple recipe calculator
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## Quickstart
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The example yml files you will find in the repository (no guarantee for food values; fetch your own):
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- [food.yml](food.yml)
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- [fruit_cocktail.yml](fruit_cocktail.yml)
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```
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python pyfood.py --yml-food=food.yml --yml-recipe=fruit_cocktail.yml
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Rezept: Frucht Cocktail für 3 Person(en)
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____________________ ____ _____ _____ _____ _____
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Name # kcal KH E F
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____________________ ____ _____ _____ _____ _____
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Kiwi 200 124.0 18.2 2.0 1.2
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Orange 300 141.0 24.9 3.0 0.6
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Apfel 400 260.0 57.6 1.2 0.4
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Himbeeren 350 150.5 16.8 4.5 1.1
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Heidelbeeren 250 97.5 15.0 2.5 0.0
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Zitrone 200 66.0 6.0 2.8 1.2
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____________________ ____ _____ _____ _____ _____
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Summe 839.0 138.5 16.0 4.5
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Pro Person 279.7 46.2 5.3 1.5
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Anteil % 87.1 10.1 2.8
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```
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You can see the name and the quantity of each food and
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the calculated ingredients. As an example for the Kiwi
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the double of the ingredient values is shown as specified
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in the food yml file.
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At the end you can see the sum per ingredient and the
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sum per ingredient value calculated for one person.
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Finally you see the percentages. Obviously the example is
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not really low carb :)
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Hint: there are a lot of online locations to find those
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food ingredients but usually buying food you often have
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such information available on the article somewhere with
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some exceptions of course.
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My personal rules I try to follow:
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- at least 50% protein for a recipe (in most cases)
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- avoid to eat more large calories as you should (can be roughly calculated -> internet)
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- avoid fast food; buying fresh things
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- do some sport (no athletic; just a litte bit does help; you can do it at home)
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- we (my wife and me) are making our own low carb bread (as an example)
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## The structure of the food file
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Quite simple it's a list of entries like following:
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```
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- name: Some Food
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large_calories: 1.1
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fat: 2.2
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carb:3.3
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protein: 3.3
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```
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It's always the ingredients related to 100 gram or
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100 millilitre of a concrete food. The tool does
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not check that the sum of fat, carb and protein
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is less or equal that limit.
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You can find an example file in the repository.
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Please note: no guarantee on the value there;
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I fetched them from somewhere for testing purpose only.
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## The structure of one recipe file
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You would have to organise one recipe per file and
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one file looks like following:
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```
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---
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name: Frucht Cocktail
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persons: 3
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food:
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- { name: Kiwi, quantity: 200 }
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- { name: .*nge, quantity: 300 }
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- { name: Ap.*, quantity: 400 }
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- { name: Him.*, quantity: 350 }
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- { name: Heid.*, quantity: 250 }
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- { name: Zi.*, quantity: 200 }
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```
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Of course you have name (title) and you specify
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for how many person the recipe is. Finally
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you have a food list where you specify the food
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and how many gram/millilitre you take.
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The name is a Python compatible regular expression
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so that you do not have to specify the full name.
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‎recipes/Python/93379_Recipe_Calculator/food.yml‎

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- name: Kiwi
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large_calories: 62
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fat: 0.6
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carb: 9.1
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protein: 1.0
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- name: Apfel
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large_calories: 65
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fat: 0.1
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carb: 14.4
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protein: 0.3
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- name: Orange
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large_calories: 47
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fat: 0.2
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carb: 8.3
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protein: 1.0
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- name: Heidelbeeren
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large_calories: 39.0
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fat: 0.0
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carb: 6.0
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protein: 1.0
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- name: Himbeeren
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large_calories: 43.0
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fat: 0.3
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carb: 4.8
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protein: 1.3
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- name: Zitrone
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large_calories: 33.0
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fat: 0.6
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carb: 3.0
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protein: 1.4

‎recipes/Python/93379_Recipe_Calculator/fruit_cocktail.yml‎

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---
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name: Frucht Cocktail
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persons: 3
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food:
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- { name: Kiwi, quantity: 200 }
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- { name: .*nge, quantity: 300 }
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- { name: Ap.*, quantity: 400 }
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- { name: Him.*, quantity: 350 }
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- { name: Heid.*, quantity: 250 }
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- { name: Zi.*, quantity: 200 }

‎recipes/Python/93379_Recipe_Calculator/pyfood.py‎

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#!/usr/bin/python
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# -*- coding: iso-8859-15 -*-
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"""
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Recipe calculator.
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"""
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import re
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import click
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import yaml
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FORMAT = "%20s %4s %5s %5s %5s %5s"
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@click.command()
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@click.option('--yml-food', default="", help="Yaml file with food details")
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@click.option('--yml-recipe', default="", help="Yaml file with recipe details")
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def main(yml_food, yml_recipe):
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food = yaml.load(open(yml_food).read())
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recipe = yaml.load(open(yml_recipe).read())
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persons = int(recipe['persons'])
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print("\nRezept: %s für %d Person(en)" % (recipe['name'], persons))
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separator = FORMAT % ("_"*20, "_"*4, "_"*5, "_"*5, "_"*5, "_"*5)
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print(separator)
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print(FORMAT % ("Name", "#", "kcal", "KH", "E", "F"))
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print(separator)
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sum_large_calories = 0.0
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sum_carb = 0.0
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sum_protein = 0.0
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sum_fat = 0.0
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for rentry in recipe['food']:
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for fentry in food:
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if re.match(rentry['name'], fentry['name']):
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name = fentry['name']
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quantity = int(rentry['quantity'])
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large_calories = round(quantity * fentry['large_calories'] / 100.0, 1)
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carb = round(quantity * fentry['carb'] / 100.0, 1)
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protein = round(quantity * fentry['protein'] / 100.0, 1)
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fat = round(quantity * fentry['fat'] / 100.0, 1)
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print(FORMAT % (name, quantity, large_calories, carb, protein, fat))
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sum_large_calories += large_calories
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sum_carb += carb
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sum_protein += protein
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sum_fat += fat
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break
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sum_ingredients = sum_carb + sum_protein + sum_fat
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percentage_carb = round(sum_carb * 100.0 / sum_ingredients, 1)
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percentage_protein = round(sum_protein * 100.0 / sum_ingredients, 1)
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percentage_fat = round(sum_fat * 100.0 / sum_ingredients, 1)
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print(separator)
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print(FORMAT % ("Summe", "",
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sum_large_calories,
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sum_carb,
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sum_protein,
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sum_fat))
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print(FORMAT % ("Pro Person", "",
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round(sum_large_calories / persons, 1),
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round(sum_carb / persons, 1),
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round(sum_protein / persons, 1),
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round(sum_fat / persons, 1)))
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print(FORMAT % ("Anteil %", "", "",
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percentage_carb,
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percentage_protein,
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percentage_fat))
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print("")
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if __name__ == "__main__":
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main()

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