Compare Tornado and web2py
Tornado is a Python web framework and asynchronous networking library developed at FriendFeed. By using non-blocking network I/O, Tornado can scale to tens of thousands of open connections, making it ideal for long polling, WebSockets, and other applications that require a long-lived connection to each user. It is great for use cases that are I/O intensive (e.g., proxies) but not ideal for compute-intensive use cases.
web2py was originally designed as a teaching tool, but it gained adoption outside of the academic world. It is a full-stack framework containing all the components needed to build fully functional web applications using the Model View Controller (MVC) pattern. Inspired by the Ruby on Rails and Django. It is not very popular right now but was ranked amongst top Python web frameworks in 2011.
Let's see how Tornado and web2py compare on various factors and features and which to choose when.
Python web framework and asynchronous networking library, which does non-blocking I/O.
Python full-stack for building web applications.
FriendFeed, Turntable.fm, Fantamaster.it
Not in use at any large company.
20 job openings which list Tornado as a requirement.
8 job openings which list web2py as a requirement.
Web2py takes a unique approach where models and controllers are executed in a single global environment, which is initialized at each HTTP request. While there are pros to this approach, such as developers never having to worry about cleaning up or avoid conflict between requests, the major disadvantage is that the code is models is executed with every request which carries a performance penalty.
Tornado is simple and flexible.
Not as flexible as microframeworks, but doesn't always get in the way.
Ease of Learning
Tornado is not difficult to learn if the user is familiar with asynchronous and non-blocking I/O. The online resources, courses, and tutorials are not as plentiful compared to Flask or Django.
Ease of Learning
Limited online tutorials and resources, and many are several years old. The best resource for learning is web2py author's own "web2py Complete Reference Manual"
, which seems to be written in 2013.
Through Plugins or Extensions
Ships with a Database Abstraction Layer (DAL) which supports MySQL, PostgreSQL, SQLite, and many other relational databases.
No built-in support for NoSQL databases, but 3rd party libraries support asynchronous, non-blocking access. Motor
is one such library from the makers of MongoDB. However, a lot of client libraries like DynamoDB
appear to have been deprecated or not actively maintained.
No built-in support. Very limited support for NoSQL databases. Currently, it only supports Google Datastore on the Google App Engine.
No built-in admin panel. No well-known 3rd party tools either.
Yes ships with a built-in admin panel.
No built-in support for REST API, but users can implement REST APIs manually.
Built-in security mechanisms
such as secure cookies, XSRF, DNS Rebinding and etc. Has been used in production for many years so security is generally decent.
Built-in protection against input injections, XSS, and common vulnerabilities. Read more here
. It has known security vulnerabilities. Please see list here
Tornado uses custom
templating library out of the box.
No built-in support.
Built-in support. Read more here
Provides user authentication and also supports 3rd party authentication and authorization systems like Google, Twitter, Facebook, etc.
Built-in support using Python's unittest
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