Category: python
flask blueprints and modular applications
Published on 30 Sep 2026
Explanation
Blueprints allow Flask applications to organize routes and functionality into reusable modules.
Code:
app/ ├── __init__.py ├── user_routes.py ├── product_routes.py └── order_routes.py
Explanation
Create a Blueprint for user-related routes.
Code:
from flask import Blueprint
user_bp = Blueprint('users', __name__)
@user_bp.route('/users')
def users():
return {'users': []}
Explanation
Register a Blueprint with the main Flask application.
Code:
from flask import Flask from user_routes import user_bp app = Flask(__name__) app.register_blueprint(user_bp)
Explanation
A Blueprint can define a common URL prefix for all routes inside the module.
Code:
user_bp = Blueprint(
'users',
__name__,
url_prefix='/api/users'
)
Explanation
Blueprints make large applications easier to maintain by separating features into independent modules.
Code:
Flask App | +-- User Blueprint +-- Product Blueprint +-- Order Blueprint +-- Auth Blueprint