Building online apps that can be used by other applications using RESTful APIs (Application Programming Interfaces) is a powerful technique. They enable programmers to design a user interface that other programmes can use to access data or functionality in their own applications.
Building RESTful APIs is a good fit for the well-liked Python web framework Flask. It is the perfect option for small to medium-sized projects due to its portability and ease of use.
Defining your resources is the first step in using Flask to create a RESTful API. Resources are the things your API will make available, such users or products. Each resource must be identified by a special URI (Uniform Resource Identifier).
The HTTP methods that your API will support must then be specified. These include GET (for data retrieval), POST (for data creation), PUT (for data updating), and DELETE (for data deletion). (to delete data).
You can begin creating your API routes after defining your resources and HTTP methods. Utilizing decorators, which convert URL patterns into Python functions, Flask routes are defined. For instance, the code that follows specifies a path for getting a list of all users:
from flask import Flask app = Flask(name) @app.route('/users', methods=['GET']) def get_users(): # code to retrieve list of users return users
You can make use of authentication and authorisation to increase the security of your API. Authorization is the act of allowing or refusing access to resources based on a user’s role or rights, whereas authentication is the process of confirming that a user is who they claim to be. Several extensions that Flask offers make it simple to integrate authentication and authorization into your API.
Finally, Flask offers a quick and effective solution to create RESTful APIs in Python. You may build a strong API that other applications can use to access your data or functionality by specifying resources, HTTP methods, routes, and security precautions. Your API answers will be straightforward for other applications to consume thanks to Flask’s built-in support for JSON.