Reach consensus on underlying Python Framework

[jblossey]

Current candidates are:

• Flask
• Django
• Falcon
• CherryPy
• Appier
• Bottle All taken from WSGI.org

[jblossey]

Flask

• License: BSD-3-Clause
• Wrapper around Werkzeug and Jinja
• Good exhaustive documentation
• Supports Python 3 & 2
• Documented Deployment option to AWS Elastic Beanstalk for possible increased flexibility (?)
• Very easy routing
• Very easy HTTP method (and thus REST) handling
• Built-in abilities to easily manage Cookies, requests & responses
• Regarding the Paypal API -> APIs w/ JSON feature
• Built-in Session management (unknown of the session management in Piggymetrics this can be useful)
• Built-in logger

[jblossey]

Django

• License: special Django license
• all of the above (except Werkzeug/Jinja Wrapper, AWS EB Deploy, and Django seems overall more complex but also more customizable)
• Additional feats:
  • Pagination (Depending on how much visual complexity we want to include)
  • Enhanced Security measures (We are dealing with personal financial info after all)
  • Signals for remote communication/calls between parts of the website
  • Own test suite
  • Handy shortcut functions

[jblossey]

Falcon

• License: Apache 2.0
• Very minimalistic
• Does not implement any HTTP features
• Supports Unittest and Pytest
• Supports before and after hooks natively
• Very easy REST implementation via inset on_get/post/put... methods (see routing)
• highly customizable

[jblossey]

CherryPy

• License: BSD-3-Clause
• Object-oriented
• Very easy RESTing
• AJAX
• Distinction of dispatchers and tools
• plugins for functions outside of the request life-cycle
• Supports Pytest and Codecoverage natively
• native logger
• session/cookie handling
• easy startup configuration via simple JSON file
• Native Methods for JSON handling
• Advanced:
  • Advanced RESTful Style dispatching
  • Streaming
  • Signals
  • WSGI support
• much more...

[jblossey]

Appier

• License: Apache 2.0
• Object-oriented
• explicit async/await structure (needs ASGI compliant server)
• Automatic JSON response encoding
• Easy configuration via reserved config variables (comparable to globals in Javascript)
• Easy re-routing of I/O
• Built-in event handling and logging

[jblossey]

Bottle

• License: MIT
• From the Site:

  • Routing: Requests to function-call mapping with support for clean and dynamic URLs.
  • Templates: Fast and pythonic built-in template engine and support for mako, jinja2 and cheetah templates.
  • Utilities: Convenient access to form data, file uploads, cookies, headers and other HTTP-related metadata.
  • Server: Built-in HTTP development server and support for paste, fapws3, bjoern, gae, cherrypy or any other WSGI capable HTTP server.

• Dynamic Routing via Regex
• Easy REST setup

[jblossey]

I would personally prefer:

1. CherryPy
2. Flask
3. Falcon

[AndreasSpateneder]

After sprint meeting we decided to use CherryPy as the project Framework. It is a lightweight framework which has a suitible complexity for this project.