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APIs (Application Programming Interfaces) are essential for enabling communication between different software applications. They define the methods and data formats that applications can use to request and exchange information. Python provides several frameworks to build APIs, including Flask, Django REST Framework, and FastAPI.
Using Flask to Build APIs
Flask is a lightweight and flexible Python web framework that is easy to use for building APIs. Here is a basic example of creating an API using Flask:
from flask import Flask, jsonifyapp = Flask(__name__)@app.route('/api', methods=['GET'])def home():return jsonify({'message': 'Hello, World!'})if __name__ == '__main__':app.run(debug=True)Copied!✕CopyThis script creates a simple API that returns a JSON response when visited at the route /api.
Using Django REST Framework
A Close Look at a FastAPI Example Application - Real Python
FastAPI Tutorial - GeeksforGeeks
5 days ago · FastAPI is a modern, high performance Python web framework for building APIs quickly and efficiently. It offers automatic data validation, type …
First Steps - FastAPI
- The @app.get("/") tells FastAPIthat the function right below is in charge of handling requests that go to: 1. the path / 2. using a getoperation You can also use the other operations: 1. @app.post() 2. @app.put() 3. @app.delete() And the more exotic ones: 1. @app.options() 2. @app.head() 3. @app.patch() 4. @app.trace()
Home - FastAPI Tutorial
FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints. Historically, async work in …
FastAPI Tutorial: Build Your First Python REST API
Dec 1, 2025 · Learn to build your first REST API with FastAPI in Python, a step-by-step guide covering installation, routing, data validation, and automatic documentation.
FastAPI: Build a Python REST API in 5 Steps [2026]
2 days ago · FastAPI has become Python’s fastest-growing web framework, surpassing Flask in GitHub stars in late 2025 and now powering production APIs at companies like Microsoft, Netflix, and Uber. …
Mastering FastAPI: A Complete Learning Roadmap - DEV Community
1 day ago · FastAPI is a powerful, modern Python web framework that leverages Python type hints and ASGI to build... Tagged with api, backend, python, tutorial.
Creating First REST API with FastAPI - GeeksforGeeks
Mar 26, 2026 · Building a REST API in FastAPI involves decorating Python functions to handle specific HTTP methods. Using the @app decorator, you can define …
fastapi · PyPI
Mar 23, 2026 · FastAPI is a modern, fast (high-performance), web framework for building APIs with Python based on standard Python type hints. The key features …
Build a Python REST API with FastAPI – Step-by-Step …
This step-by-step guide teaches intermediate developers to build production-ready REST APIs using FastAPI while incorporating best practices for testing, security, …
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