tornado

I have installed jupyter and when trying to start it, I get the following error: File "/Library/Frameworks/Python.framework/Versions/2.7/bin/jupyter-notebook", line 7, in <module> from notebook.notebookapp import main File"/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/notebook/__init__.py", line 25, in <module> from .nbextensions import install_nbextension File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/notebook/nbextensions.py", line 35, in <module> from tornado.log import LogFormatter ImportError: No module named tornado.log

1 from tornado.httpserver import HTTPServer from tornado.routing import RuleRouter, Rule, PathMatches from tornado.web import RequestHandler, Application from tornado.ioloop import IOLoop class Handler1(RequestHandler): def get(self): self.write('1') class Handler2(RequestHandler): def get(self): self.write('2') app1 = Application([ (r"/app1/handler", Handler1), # other handlers ... ]) app2 = Application([ (r"/app2/handler", Handler2), # other handlers ... ]) router = RuleRouter([ Rule(PathMatches("/app1.*"), app1), Rule(PathMatches("/app2.*"), app2) ]) if __name__ == '__main__': server =

I want to set up a basic ssl-authenticated socket server to do some network communication. I'm getting the error below. It seems to be coming from the SSLIOStream not handshaking before reading: File "simple_ssl_server.py", line 70, in connection_ready node_io_stream.read_until("OK", on_ok) File "/home/tombrown/skyhook/lib/python2.7/site-packages/tornado-2.1.1-py2.7.egg/tornado/iostream.py", line 161, in read_until if self._read_to_buffer() == 0: File "/home/tombrown/skyhook/lib/python2.7/site-packages/tornado-2.1.1-py2.7.egg/tornado/iostream.py", line 375, in _read_to_buffer chunk = self.

I want to write a custom function and pass it unto my tornado template fine. Like def trimString(data): return data[0:20] then push this into my tornado file. This should allow me trim strings. Is this possible? Thanks. It's not especially clear in the documentation , but you can do this easily by defining this function in a module and passing the module to tornado.web.Application as the ui_methods argument. I. E.: in ui_methods.py: def trim_string(data): return data[0:20] in app.py: import tornado.ioloop import tornado.web import ui_methods class MainHandler(tornado.web.RequestHandler): def

​#!/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. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # 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. See the # License for the specific language governing permissions and limitations # under the License. import

在第二章中，我们看到了如何使用tornado的template轻松地将数据从handler传送给web页面。让我们在保持简洁的web tag结构的同时，轻松地向web页面插入动态数据，然而大部分网站都希望使用一个高可用的响应模型，将内容按照页眉、页脚和布局框架的形式进行管理。在这一章我们将让你了解到如何通过tornado的template或UI模块完成这种扩展。 块和替换 当你花费了大量的时间为你的web应用创建和制作模板时，你有没有发现，它们似乎只是按照逻辑的形式进行布局，你希望你的前端代码和后端代码一样能够尽可能多的重用对吗？tornado提供了丰富的模板集成和扩展的块语句帮助你完成这一点，tornado可以按照你想要的方式灵活的控制和改变你现有的模板，提高它们的重用性。如果想要扩展现有的模板，你只需要将{% extends ”filename.html“%}放到你的模板中。例如使用你的父模板(main.html)去扩展一个新的模板，你只需要这么做： {% extends ”main.html” %} 它将会在新的web页面中继承并使用main.html，然后将main.html的内容插入到你希望显示的地方。有了这个系统，你可以创建一个主模板，嵌入到其他有特殊需求的子模版中，在子模块中你可以使用动态内容或效果快速地扩展你的应用。 基本的块

在这一章，我们将会给出几个关于tornado web应用如何使用数据库的例子。首先我们将会通过一个简单的RESTful API的例子，结合之前的练习Burt’s Book网站，一步一步去创建一个具有完整功能的Burt‘s Book 网站。 我们将会使用MongoDB作为数据库，pymongo作为python连接MongoDB的驱动。当然还有web应用还可以与许多数据库结合：Redis, CouchDB, MySQL是其中几个比较出名的选择。tornado自带的库中也封装了MySQL的驱动包。我们之所以选择MongoDB，只是因为它非常简单与方便，很容易安装并集成到Python的代码中，MongoDB具备NoSQL的特性，让我们可以直接使用原型不需要去预定义数据结构。 在这里我们假设你有一台可以运行MongoDB的电脑，这样你就可以很轻松地通过这个示例代码去连接MongoDB服务，假如你不想将MongoDB安装到你的电脑中，或者没有合适的操作系统安装MongoDB，我们建议你使用MongoHQ这个托管的MongoDB服务。 在第一个例子中，我们假设你已经将MongoDB安装到你的电脑中，当然我们也可以将使用MongoDB的代码调整成连接远程服务器(MongoHQ)，这非常简单。 我们还假设你拥有一些数据库方面的经验，虽然不一定是与MongoDB相关的

How is the performance of this script: http://tornadogists.org/2185380/ copied below. from time import sleep from tornado.httpserver import HTTPServer from tornado.ioloop import IOLoop from tornado.web import Application, asynchronous, RequestHandler from multiprocessing.pool import ThreadPool _workers = ThreadPool(10) def run_background(func, callback, args=(), kwds={}): def _callback(result): IOLoop.instance().add_callback(lambda: callback(result)) _workers.apply_async(func, args, kwds, _callback) # blocking task like querying to MySQL def blocking_task(n): sleep(n) return n class Handler

How could I set a break point in my tornado app? I tried pdb, but Tornado app seams to be ignoring my pdb.set_trace() command in my app. Where did you put pdb.set_trace() ...? This works for me: #!/usr/bin/python # -*- coding: utf-8 -*- import tornado.httpserver import tornado.ioloop import tornado.options import tornado.web import pdb from tornado.options import define, options define("port", default=8000, help="run on the given port", type=int) class IndexHandler(tornado.web.RequestHandler): def get(self): greeting = self.get_argument('greeting', 'Hello') reself.write(greeting + ', friendly