webapp2 vs Yesod: What are the differences?

webapp2: Lightweight Python web framework compatible with Google App Engine’s webapp. webapp2 is a simple. it follows the simplicity of webapp, but improves it in some ways: it adds better URI routing and exception handling, a full featured response object and a more flexible dispatching mechanism; Yesod: A RESTful Haskell web framework built on WAI. Yesod believes in the philosophy of making the compiler your ally, not your enemy. We use the type system to enforce as much as possible, from generating proper links, to avoiding XSS attacks, to dealing with character encoding issues. In general, if your code compiles, it works. And instead of declaring types everywhere you let the compiler figure them out for you with type inference.

webapp2 and Yesod can be categorized as "Frameworks (Full Stack)" tools.

Some of the features offered by webapp2 are:

• Compatible with webapp
• Compatible with latest WebOb
• Full-featured response object

On the other hand, Yesod provides the following key features:

• safety & security guaranteed at compile time
• developer productivity: tools for all your basic web development needs
• raw performance

Yesod is an open source tool with 2.11K GitHub stars and 329 GitHub forks. Here's a link to Yesod's open source repository on GitHub.