Flask Routing Explained

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Flask Routing Explained

Flask, a lightweight Python web framework, is widely known for its simplicity and flexibility. One of its core features is routing, which defines how a web application responds to client requests. Simply put, routing is the process of mapping URLs to specific functions in your Flask application.

In Flask, routes are created using the @app.route() decorator. This decorator binds a URL path to a function, known as a view function. For example:

from flask import Flask  

app = Flask(__name__)  

@app.route("/")  

def home():  

    return "Welcome to Flask!"  

Here, visiting the root URL (/) triggers the home() function, returning a response to the browser.

Flask also supports dynamic routing, allowing you to pass variables through the URL. For instance:

@app.route("/user/<name>")  

def user(name):  

    return f"Hello, {name}!"  

When you visit /user/Alex, the app responds with Hello, Alex!. You can even specify types like <int:id> for integer values.

Another key aspect is handling HTTP methods. By default, routes handle GET requests, but you can specify others such as POST, PUT, or DELETE:

@app.route("/submit", methods=["POST"])  

def submit():  

    return "Form submitted!"  

In summary, Flask routing gives developers a clean and powerful way to define application endpoints. By combining static and dynamic routes with different HTTP methods, you can build everything from simple pages to complex APIs with ease. 

Read More

Handling Forms and Validation in HTML

Vue.js Basics for Python Backends

Introduction to React.js for Python Developers

Integrating jQuery into Flask/Django

Using Bootstrap in Python Projects

DOM Manipulation with Vanilla JavaScript

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