Step-by-Step Tutorial: Creating a RESTful API with Flask and SQLAlchemy
In this tutorial, I’ll guide you through the process of building a RESTful API using Flask, a Python microframework, and SQLAlchemy, a powerful SQL toolkit. You’ll learn how to create endpoints for performing CRUD (Create, Read, Update, Delete) operations on a database using HTTP methods. Let’s get started!
Prerequisites:
- Basic knowledge of Python programming.
- Python and pip installed on your machine.
Step 1: Setup and Installation
- Create a new directory for your project and navigate to it in your terminal.
- Set up a virtual environment:
python3 -m venv venv
- Activate the virtual environment:
source venv/bin/activate
- Install Flask and SQLAlchemy:
pip install Flask SQLAlchemy
Step 2: Define Models
- Create a file named
models.py
. - Define your SQLAlchemy model classes for the database entities you want to create.
- Use decorators to define fields and relationships within your models.
Step 3: Create Flask App
- Create a file named
app.py
. - Import necessary modules:
from flask import
…