pyfdc 0.1.1

A python interface to FoodDataCentral

pyfdc: A python interface to FoodDataCentral

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Installation

The simplest way to install is as follows:

Open the Terminal/CMD/Git bash/shell and enter

# You should use your default python interpreter
python3.7 -m pip install git+https://github.com/Nelson-Gon/pyfdc.git

Otherwise:

# clone the repo
git clone https://www.github.com/Nelson-Gon/pyfdc.git
cd pyfdc
python3 setup.py install

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Sample usage

from pyfdc import *

Set session api key

To avoid providing an api key for each call, one can set a session api key as follows:

utils.set_api_key("my_api_key_here")

Key Features

There are two key classes defined in pyfdc:

1. FoodSearch implements the class for objects aimed at querying the database with a search term. To get details about foods for a given search term, one can do the following:

my_search = pyfdc.FoodSearch(search_phrase="nugget")
list(my_search.get_food_info(target="fdcId"))

The above will result in the following output(truncated):

[[337348], [337394], [170725], [340673], [337347], [173721], [173722], [337346].....]]

To get descriptions of the different results:

list(my_search.get_food_info(target="description"))

This will result in the following result(truncated):

[['Chicken nuggets'], ['Turkey, nuggets'], ["WENDY'S, Chicken Nuggets"], ['Nutty Nuggets, Ralston Purina']]]

The simplest way to find out all available targets is to simply call:

list(my_search.get_food_info())

This will throw an error showing what options are available.:

target should be one of ['fdcId', 'description', 'scientificName', 'commonNames', 'additionalDescriptions', 'dataType', 'foodCode', 'gtinUpc', 'ndbNumber', 'publishedDate', 'brandOwner', 'ingredients', 'allHighlightFields', 'score']

For more details, please see the documentation of each of these classes and the associated documents.

To get a DataFrame from multiple target fields, we can use get_multiple_details as shown:

my_search.get_multiple_details(["fdcId","foodCode","description"])
     fdcId  foodCode                                        description
0   337348  24198740                                    Chicken nuggets
1   337394  24208000                                    Turkey, nuggets
2   170725  57316200                           WENDY'S, Chicken Nuggets
3   340673  24198735                      Nutty Nuggets, Ralston Purina
4   337347  24198730                 Chicken nuggets, from school lunch
5   173721  26100260            Salmon nuggets, breaded, frozen, heated
6   173722  13120310      Salmon nuggets, cooked as purchased, unheated

2. FoodDetails

The FoodSearch class has an important advantage: it can allow us to obtain FoodDataCentral(fdcId) IDs using a simple search term. To get full details about a given fdcId, one can do the following:

my_details = pyfdc.FoodDetails(fdc_id=504905)
my_details.get_food_details("ingredients")

This will give us the following output(truncated):

MECHANICALLY SEPARATED CHICKEN, CHICKEN BROTH,

To get nutrient details, we can use the following which returns a list of all nutrient details. For brevity, only part of the first list item is shown.

list(my_details.get_nutrients())

[      id number                  name  rank unitName
 0   1079    291  Fiber, total dietary  1200        g
 1   1079    291  Fiber, total dietary  1200        g
 2   1079    291  Fiber, total dietary  1200        g
 3   1079    291  Fiber, total dietary  1200        g
 4   1079    291  Fiber, total dietary  1200        g
 5   1079    291  Fiber, total dietary  1200        g
 6   1079    291  Fiber, total dietary  1200        g

To return a merge of the above results, we can use merge_food_nutrients as follows:

my_details.merge_nutrient_results()
     number                          name  rank unitName
id                                                      
1079    291          Fiber, total dietary  1200        g
1079    291          Fiber, total dietary  1200        g
1079    291          Fiber, total dietary  1200        g
1079    291          Fiber, total dietary  1200        g
1079    291          Fiber, total dietary  1200        g
     ...                           ...   ...      ...
1258    606  Fatty acids, total saturated  9700        g
1258    606  Fatty acids, total saturated  9700        g
1258    606  Fatty acids, total saturated  9700        g
1258    606  Fatty acids, total saturated  9700        g
1258    606  Fatty acids, total saturated  9700        g
[225 rows x 4 columns]