Will McGugan has brought a lot of color to CLIs within Python due to Rich. 
 Then Textual started rethinking full command line applications, including layout with CSS.
 And now Textualize, a new startup, is bringing CLI apps to the web.

Links:

• rich
• rich-cli
• textual
• Textualize.io
• Rich Gallery
• Textualize Gallery
• Python Bytes Podcast

 Learn pytest

• pytest is the number one test framework for Python.
• Learn the basics super fast with Hello, pytest!
• Then later you can become a pytest expert with The Complete pytest Course
• Both courses are at courses.pythontest.com