"Flask":http://flask.pocoo.org/ is a micro framework for python. I wanted to create a simple example using Flask on "Google App Engine":http://appengine.google.com so I created this todo list app.

You can try it out for yourself at "flasktodo.appspot.com":http://flasktodo.appspot.com. To give you an idea of how simple coding in a micro framework can be I've included the code below.

p. application.py

bc.. from flask import Flask app = Flask(name)

from google.appengine.ext import db from google.appengine.api import users

from flask import redirect, url_for, request, render_template, abort, flash, get_flashed_messages

class Task(db.Model): user = db.UserProperty() name = db.StringProperty(required=True) done = db.BooleanProperty()

@app.route('/') def list(): user = users.get_current_user() tasks = Task.all().filter('user =', user) return render_template('list.html', user=user, logout_url=users.create_logout_url("/"), tasks=tasks, flashes=get_flashed_messages());

@app.route('/', methods=['POST']) def task_post(): name = request.form['name'] if not name: flash("Oops you forgot to set a task name.") return redirect(url_for('list')) task = Task(name = request.form['name']) task.user = users.get_current_user() task.put() return redirect(url_for('list'))

@app.route('/delete/int:id') def task_delete(id): task = Task.get_by_id(id) if task and task.user == users.get_current_user(): task.delete() else: abort(404)

return redirect(url_for('list'))

@app.route('/done/int:id') def task_done(id): task = Task.get_by_id(id) if task and task.user == users.get_current_user(): if task.done: task.done = False else: task.done = True task.put() else: abort(404)

return redirect(url_for('list'))

set the secret key. keep this really secret:

app.secret_key = 'the secret key'

if name == 'main': app.run()