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An online Flask compiler lets you write, run, and test Flask code instantly in your browser—no installation or setup required. Just open Nottri.com, select Flask, and start coding. Whether you're a student, teacher, or developer, our platform provides a fast, accessible, and powerful way to practice, learn, and build projects from anywhere.
Traditional development environments require complex setup processes, dependency management, and often expensive software licenses. With Nottri.com's online Flask compiler, you can skip all the hassle and dive straight into coding. Our platform supports the latest Flask features, libraries, and frameworks, ensuring you're always working with cutting-edge technology.
Traditionally, online compilers take your code, send it to a remote server, and execute it using standard stdin (for input) and stdout (for output). You write code, click "Run", and see the results in a simple output box. But most platforms only offer basic execution in a shared or restricted environment, limiting what you can do.
The typical workflow involves: writing code in a basic text editor, submitting it to a queue, waiting for execution on shared resources, and receiving limited output. This approach often leads to slow performance, security concerns, and restricted functionality that doesn't reflect real-world development scenarios.
Nottri.com revolutionizes online coding by providing each user with their own isolated Linux environment. This isn't just a code executor—it's a complete development workspace that mirrors professional development environments.
flask main.flask, pip install, npm install)The inspiration for Nottri.com came from experiencing the frustrations of existing online coding platforms. We identified key pain points that developers, students, and educators face daily:
Most platforms suffer from slow execution, long queue times, and laggy interfaces that interrupt the coding flow.
Shared environments pose security risks, with limited isolation between users and restricted access to system resources.
Basic code runners lack the tools and flexibility needed for real-world development and learning scenarios.
Our solution addresses these challenges by providing a platform that combines the convenience of online access with the power and security of local development environments. We've built Nottri.com to be the platform we wished existed when we were learning to code.
ls, mkdir, grep, etc.)pip, npmStarting your coding journey with Nottri.com is incredibly simple:
Once you sign up on Nottri.com, you’re not just getting a compiler — you're getting a full project development workspace.
Just like GitHub or Replit, you can create new coding projects, organize them, and come back to continue anytime. But here’s what makes Nottri.com even more powerful:
flask run, npm install)Whether you're building a Flask web app, a React frontend, a Python script, or just solving DSA problems — Nottri's powerful editor and real terminal give you all the tools you need.
pip, npm, etc.We believe coding tools shouldn’t be expensive or complicated. That’s why Nottri.com offers one of the most affordable and flexible pricing systems on the internet — way cheaper than Replit, GitHub Codespaces, or any other cloud IDE.
Instead of complicated monthly plans, we use a simple credit-based system:
And here’s the best part…
Your credits are yours forever. Whether you buy 10 or 1000 credits — you can use them anytime, with no expiry date.
This gives you full freedom — pay only when you need power features.
We love consistency — and we reward it!
Every time you log in daily, you build a streak. And here’s what you get:
Even if you don’t buy credits, you can still earn them — just by showing up and learning or coding daily.
We understand that:
That’s why we offer fully custom pricing options:
Just tell us your needs — and we’ll make a plan just for you!
| Feature | Nottri.com | Other IDEs |
|---|---|---|
| Pay-as-you-go | ✅ Yes | ❌ Often No |
| Credit never expires | ✅ Yes | ❌ Mostly expire |
| Bonus on streak | ✅ Yes | ❌ Rare |
| Custom pricing | ✅ Yes | ❌ Limited |
| Hosting / IDE features | ✅ Powerful | 💸 Locked behind expensive plans |
This isn't just a code runner—it's a complete development ecosystem. Whether you're solving complex algorithms, learning a new programming paradigm, building production-ready applications, or teaching the next generation of developers, Nottri.com provides the tools, performance, and flexibility you need to succeed.
Join thousands of developers, students, and educators who have made Nottri.com their go-to platform for online coding. Experience the difference of having a real Linux environment at your fingertips, complete with the power and flexibility of professional development tools, all accessible through your web browser.
Access a full terminal environment, run Linux commands, and manage your project’s dependencies directly within the IDE.
Browse and interact with websites directly within the IDE. Supports real-time interaction with web content without leaving the workspace.
Manage your project files and directories effortlessly within the IDE. Create, edit, rename, move, and delete files—all in one place.
Experience seamless code editing with real-time syntax highlighting, tab support, and intelligent code suggestions for a smoother development workflow.
Flask is a lightweight web framework for Python. It provides the essentials to build web applications, such as routing, templates, and handling requests, while being minimalistic and flexible for developers to build their own features.
To set up Flask, install it via pip. Make sure you have Python installed on your system.
pip install flaskVerify the installation by running the following command:
python -m flask --versionStart by creating a simple Flask application that returns a "Hello, World!" message on the root route.
# app.py
from flask import Flask
app = Flask(__name__)
@app.route('/')
def hello():
return "Hello, World!"
if __name__ == "__main__":
app.run(debug=True)
Run the app using:
python app.pyFlask uses routes to map URLs to functions, called view functions, which generate the response for the client. The @app.route decorator is used to define these routes.
# Example:
@app.route('/hello')
def hello_page():
return "Hello from Flask!"
Flask uses Jinja2 for rendering templates. Templates allow you to generate HTML dynamically based on the data passed to them from the server.
# Example:
from flask import render_template
@app.route('/greet')
def greet():
return render_template('greet.html', name="Alice")
Create the greet.html file inside the templates folder with content like:
Greeting
Hello, {{ name }}!
Flask allows you to handle form submissions and access form data using the request object.
# Example:
from flask import request
@app.route('/submit', methods=['POST'])
def submit():
name = request.form['name']
return f"Hello, {name}!"
HTML form example:
Flask can serve static files (such as images, CSS, and JavaScript) from a special static folder. Simply place static files inside this folder, and access them using the /static/ URL prefix.
# Example of linking a static CSS file:
Flask provides utilities for redirecting users to different URLs and handling errors.
# Example:
from flask import redirect, url_for
@app.route('/old-page')
def old_page():
return redirect(url_for('hello'))
@app.errorhandler(404)
def page_not_found(error):
return "Page not found", 404
Flask can integrate with various databases using extensions such as Flask-SQLAlchemy. This allows you to interact with relational databases through models and queries.
# Example using SQLAlchemy:
from flask_sqlalchemy import SQLAlchemy
app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///database.db'
db = SQLAlchemy(app)
class User(db.Model):
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(80))
@app.route('/add_user')
def add_user():
new_user = User(name='Alice')
db.session.add(new_user)
db.session.commit()
return 'User added!'
Flask has many extensions that provide additional functionality. Common extensions include Flask-WTF (forms), Flask-Login (authentication), Flask-Mail (email), and Flask-RESTful (building APIs).
# Example with Flask-WTF:
from flask_wtf import FlaskForm
from wtforms import StringField, SubmitField
class MyForm(FlaskForm):
name = StringField('Name')
submit = SubmitField('Submit')