Behavior-Driven Development in Python

https://code.tutsplus.com/tutorials/behavior-driven-development-in-python--net-26547

Behavior-Driven Development (which we will now refer to as "BDD") follows on from the ideas and principles introduced in Test-Driven Development. The key points of writing tests before code really apply to BDD as well. The idea is to not only test your code at the granular level with unit tests, but also test your application end to end, using acceptance tests. We will introduce this style of testing with the use of the Lettuce testing framework.

What Is Agile Development?

http://index-of.es/Python/Foundations.of.Agile.Python.Development.Jeff.Younker.2008.pdf

What Is Agile Development?
Agile development is a term given to an entire class of iterative development methodologies. Their unifying characteristic is a focus on short development cycles, on the scale of weeks rather than months. Each development cycle, referred to as an iteration or sprint, produces a working product. TDD test

2017 Google Summer of Code - Port Cricket to use Toga, instead of Tkinter

https://pybee.org/news/buzz/2017-google-summer-of-code-final-report-dayanne-fernandes/

After almost 4 months of work on Google Summer of Code 2017, finally I'm completing my proposal. Every widget migration and every commit/PR/issue/discussion with my mentors about Cricket , Toga and rubicon-objc were detailed on the Issue 58.

"Eating your own dog food"

The best way to show that a product is reliable to the customers is use it. So, the way to show that Toga is an effective tool to build a GUI is to build a complete application using it.

Cricket is a graphical tool that helps you run your test suites. Its current version is implemented using #Tkinter as the main GUI framework. So, why not test Toga inside of another product from BeeWare? That's what I have acomplished during my GSoC work.