python flask demo

from flask import Flask, jsonify
from flask import abort
from flask import make_response
from flask import request
from flask_httpauth import HTTPBasicAuth
from flask import url_for
auth = HTTPBasicAuth()
app = Flask(__name__)

def make_public_task(task):
    new_task = {}
    for field in task:
        if field == 'id':
            new_task['uri'] = url_for('get_task', task_id=task['id'], _external=True)
        else:
            new_task[field] = task[field]
    return new_task
tasks = [
    {
        'id': ,
        'title': u'Buy groceries',
        'description': u'Milk, Cheese, Pizza, Fruit, Tylenol',
        'done': False
    },
    {
        'id': ,
        'title': u'Learn Python',
        'description': u'Need to find a good Python tutorial on the web',
        'done': False
    }
]
@app.route('/')
def index():
    return "Hello, World!"

@app.route('/todo/api/v1.0/tasks', methods=['GET'])
def get_tasks():
    return jsonify({'tasks': tasks})

@app.route('/todo/api/v1.0/tasks/<int:task_id>', methods=['GET'])
def get_task(task_id):
    task = list(filter(lambda t: t['id'] == task_id, tasks))
    if len(task) == :
        abort()
    return jsonify({'task': task[]})

@app.route('/todo/api/v1.0/tasks', methods=['POST'])
def create_task():
    if not request.json or not 'title' in request.json:
        abort()
    task = {
        'id': tasks[-]['id'] + ,
        'title': request.json['title'],
        'description': request.json.get('description', ""),
        'done': False
    }
    tasks.append(task)
    return jsonify({'task': tasks}), 

@app.route('/todo/api/v1.0/tasks/<int:task_id>', methods=['PUT'])
def update_task(task_id):
    task = list(filter(lambda t: t['id'] == task_id, tasks))
    if len(task) == :
        abort()
    if not request.json:
        abort()
    print(type(request.json['title']))
    if 'title' in request.json and type(request.json['title']) != unicode:
        abort()
    if 'description' in request.json and type(request.json['description']) is not unicode:
        abort()
    if 'done' in request.json and type(request.json['done']) is not bool:
        abort()
    task[]['title'] = request.json.get('title', task[]['title'])
    task[]['description'] = request.json.get('description', task[]['description'])
    task[]['done'] = request.json.get('done', task[]['done'])
    return jsonify({'task': task[]})

@app.route('/todo/api/v1.0/tasks/<int:task_id>', methods=['DELETE'])
def delete_task(task_id):
    task = list(filter(lambda t: t['id'] == task_id, tasks))
    if len(task) == :
        abort()
    tasks.remove(task[])
    return jsonify({'result': True})

@app.errorhandler()
def not_found(error):
    return make_response(jsonify({'error': 'Not found'}), )

@auth.get_password
def get_password(username):
    if username == 'ok':
        return 'python'
    return None
@auth.error_handler
def unauthorized():
    return make_response(jsonify({'error': 'Unauthorized access'}), )
@auth.error_handler
def unauthorized():
    return make_response(jsonify({'error': 'Unauthorized access'}), )
if __name__ == '__main__':
    app.run(debug=True)