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Name: tornado
Version: 3.1.1
Summary: Tornado is a Python web framework and asynchronous networking library, originally developed at FriendFeed.
Home-page: http://www.tornadoweb.org/
Author: Facebook
Author-email: python-tornado@googlegroups.com
License: http://www.apache.org/licenses/LICENSE-2.0
Description: Tornado Web Server
==================
`Tornado <http://www.tornadoweb.org>`_ is a Python web framework and
asynchronous networking library, originally developed at `FriendFeed
<http://friendfeed.com>`_. By using non-blocking network I/O, Tornado
can scale to tens of thousands of open connections, making it ideal for
`long polling <http://en.wikipedia.org/wiki/Push_technology#Long_polling>`_,
`WebSockets <http://en.wikipedia.org/wiki/WebSocket>`_, and other
applications that require a long-lived connection to each user.
Quick links
-----------
* `Documentation <http://www.tornadoweb.org/en/stable/>`_
* `Source (github) <https://github.com/facebook/tornado>`_
* `Mailing list <http://groups.google.com/group/python-tornado>`_
* `Wiki <https://github.com/facebook/tornado/wiki/Links>`_
Hello, world
------------
Here is a simple "Hello, world" example web app for Tornado::
import tornado.ioloop
import tornado.web
class MainHandler(tornado.web.RequestHandler):
def get(self):
self.write("Hello, world")
application = tornado.web.Application([
(r"/", MainHandler),
])
if __name__ == "__main__":
application.listen(8888)
tornado.ioloop.IOLoop.instance().start()
This example does not use any of Tornado's asynchronous features; for
that see this `simple chat room
<https://github.com/facebook/tornado/tree/master/demos/chat>`_.
Installation
------------
**Automatic installation**::
pip install tornado
Tornado is listed in `PyPI <http://pypi.python.org/pypi/tornado/>`_ and
can be installed with ``pip`` or ``easy_install``. Note that the
source distribution includes demo applications that are not present
when Tornado is installed in this way, so you may wish to download a
copy of the source tarball as well.
**Manual installation**: Download the latest source from `PyPI
<http://pypi.python.org/pypi/tornado/>`_.
.. parsed-literal::
tar xvzf tornado-$VERSION.tar.gz
cd tornado-$VERSION
python setup.py build
sudo python setup.py install
The Tornado source code is `hosted on GitHub
<https://github.com/facebook/tornado>`_.
**Prerequisites**: Tornado runs on Python 2.6, 2.7, 3.2, and 3.3. It has
no strict dependencies outside the Python standard library, although some
features may require one of the following libraries:
* `unittest2 <https://pypi.python.org/pypi/unittest2>`_ is needed to run
Tornado's test suite on Python 2.6 (it is unnecessary on more recent
versions of Python)
* `concurrent.futures <https://pypi.python.org/pypi/futures>`_ is the
recommended thread pool for use with Tornado and enables the use of
``tornado.netutil.ThreadedResolver``. It is needed only on Python 2;
Python 3 includes this package in the standard library.
* `pycurl <http://pycurl.sourceforge.net>`_ is used by the optional
``tornado.curl_httpclient``. Libcurl version 7.18.2 or higher is required;
version 7.21.1 or higher is recommended.
* `Twisted <http://www.twistedmatrix.com>`_ may be used with the classes in
`tornado.platform.twisted`.
* `pycares <https://pypi.python.org/pypi/pycares>`_ is an alternative
non-blocking DNS resolver that can be used when threads are not
appropriate.
* `Monotime <https://pypi.python.org/pypi/Monotime>`_ adds support for
a monotonic clock, which improves reliability in environments
where clock adjustments are frequent. No longer needed in Python 3.3.
**Platforms**: Tornado should run on any Unix-like platform, although
for the best performance and scalability only Linux (with ``epoll``)
and BSD (with ``kqueue``) are recommended (even though Mac OS X is
derived from BSD and supports kqueue, its networking performance is
generally poor so it is recommended only for development use).
Discussion and support
----------------------
You can discuss Tornado on `the Tornado developer mailing list
<http://groups.google.com/group/python-tornado>`_, and report bugs on
the `GitHub issue tracker
<https://github.com/facebook/tornado/issues>`_. Links to additional
resources can be found on the `Tornado wiki
<https://github.com/facebook/tornado/wiki/Links>`_.
Tornado is one of `Facebook's open source technologies
<http://developers.facebook.com/opensource/>`_. It is available under
the `Apache License, Version 2.0
<http://www.apache.org/licenses/LICENSE-2.0.html>`_.
This web site and all documentation is licensed under `Creative
Commons 3.0 <http://creativecommons.org/licenses/by/3.0/>`_.
Platform: UNKNOWN
Classifier: License :: OSI Approved :: Apache Software License
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.6
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.2
Classifier: Programming Language :: Python :: 3.3
Classifier: Programming Language :: Python :: Implementation :: CPython
Classifier: Programming Language :: Python :: Implementation :: PyPy
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