Frameworks
Flask Cheat Sheet
Print-ready cheat sheet for Flask, organized for fast lookup, study, and desk-side use
Sample
What's in this cheat sheet
- Setup
- Routes
- Templates
- Request & Response
- Forms
- Database
- Blueprints
- Error Handling
- Configuration
- Extensions
Minimal App
from flask import Flask
app = Flask(__name__)
@app.route('/')
def index():
return 'Hello, World!'
Run the App
pip install flask
flask --app app run --debug
# or: python -m flask run --debug
Project Structure
app.py | Application entry point |
templates/ | Jinja2 HTML templates |
static/ | CSS, JS, images |
models.py | Database models |
requirements.txt | Python dependencies |
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