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How to create REST APIs with Flask

gcptutorials.com Python
Flask-RESTful is an excellent Flask extension that can be used for quickly building REST APIs. In this tutorial we will see how to develop REST APIs with Flask-RESTful. For the demo purpose this article is using dummy dictionary, however same API can be configured for data coming from Databases or any other sources.
Pre-requisites

  • Python 3.4 or above
  • Postman for making REST API calls

    • Install Flask and Flask-RESTfullibraries

    

pip install Flask

pip install Flask-RESTful

    Create a file app.py and write below code snippet

    
from flask import Flask, request, jsonify
from flask_restful import Resource, Api

app = Flask(__name__)
api = Api(app)

dummy_data = {
    "FirstName": "Test-User",
    "LastName": "user",
    "Age": "25"
}


class DummyAPI(Resource):
    def get(self):
        data = jsonify(dummy_data)
        return data


api.add_resource(DummyAPI, '/dummydata')

if __name__ == '__main__':
    app.run(debug=True)

    Run Python app with below command

    

python app.py

    Open Postman and execute GET request as shown below.

    pm-1

    You should see below output after executing the GET Request

    pm-2

    Category: Python