![]() ![]() First, we define a port to listen on with. Because Tornado serves the application with its own HTTP server, we also have to set up how the application is served. While building our app, we have to set up the application instance. Like Flask, Tornado is a mostly DIY framework. """Construct and serve the tornado application.""" This will handle the hookups for routing and views, including our database (when we get there) and any extra settings needed to run our Tornado app. From tornado.web, we'll import the Application object. Like Flask and Pyramid, Tornado has some central configuration that will go in _init_.py. Let's make our inner todo directory and fill it with the first few files we'll need. (tornado-someHash) $ pipenv install tornadoĬreate a setup.py for installing our application: (tornado-someHash) $ touch setup.py # setup.pyįrom setuptools import setup, find_packagesĭescription='A To-Do List built with Tornado',īecause Tornado doesn't require any external configuration, we can dive right into writing the Python code that'll run our application. If you've been following along with this series, what we do first shouldn't come as much of a surprise. Let's continue the pattern we set in the first two articles and start by tackling the setup and config. ![]() That special sauce isn't terribly useful in the app we're building in this series, but we'll see where we can use it and how it works in a more general situation. Tornado is, for the most part, as bare-bones as Flask, but with a major difference: Tornado is built specifically to handle asynchronous processes. Now let's look at a somewhat different option: the Tornado framework. We've built the same app twice and seen the similarities and differences between a complete DIY framework and a framework with a few more batteries included. In the first two articles in this four-part series comparing different Python web frameworks, we've covered the Pyramid and Flask web frameworks. compile ( '' ) _XHTML_ESCAPE_DICT = for name, value in htmlentitydefs. """ from _future_ import absolute_import, division, print_function, with_statement import re import sys from tornado.util import unicode_type, basestring_type, u try : from urllib.parse import parse_qs as _parse_qs # p圓 except ImportError : from urlparse import parse_qs as _parse_qs # Python 2.6+ try : import htmlentitydefs # py2 except ImportError : import html.entities as htmlentitydefs # p圓 try : import urllib.parse as urllib_parse # p圓 except ImportError : import urllib as urllib_parse # py2 import json try : unichr except NameError : unichr = chr _XHTML_ESCAPE_RE = re. Also includes a few other miscellaneous string manipulation functions that have crept in over time. ![]() """Escaping/unescaping methods for HTML, JSON, URLs, and others. See the # License for the specific language governing permissions and limitations # under the License. You may obtain # a copy of the License at # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. #!/usr/bin/env python # Copyright 2009 Facebook # Licensed under the Apache License, Version 2.0 (the "License") you may # not use this file except in compliance with the License.
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