This is my solution for a "unique languages by region" API. This service contains one GET endpoint that accepts a region as input, and returns a list of unique official languages used in the countries of the selected region. It uses https://restcountries.eu as the data source.

This application is written in Python, using FastAPI and Docker. I chose FastAPI as an opportunity to try out a new lightweight Python webservice. I chose Docker for its ease of development and similarity to a real-world situation.

To run this project, make sure you have Docker installed.

• Mac
• Windows
• Ubuntu

I'm running Docker version 19.03.8, with docker-compose version 1.25.0.

Then, execute the following:

$ make && make start

This will build the image and start the app. In all, you will have one service running:

             Name                    Command        State         Ports
------------------------------------------------------------------------------
andrewhou-zonar_language_app_1   /start-reload.sh   Up      0.0.0.0:80->80/tcp

From here you can execute commands against the service.

$ curl localhost:80/region/europe
{
   "languages": [
       {
           "iso639_1": "ar",
           "iso639_2": "ara",
           "name": "Arabic",
           "nativeName": "\u0627\u0644\u0639\u0631\u0628\u064a\u0629"
       },
       {
           "iso639_1": "az",
           "iso639_2": "aze",
           "name": "Azerbaijani",
           "nativeName": "az\u0259rbaycan dili"
       },
       ...
   ],
   "region": "asia"
}

To run tests, execute the following:

$ make test