Suggestion for better way to using TC with Python scripting

What you have shown is perfectly OK in technical sense.

But when come to best practice it means what best for your requirements.

Each tester using TC for different test purpose and test should be designed according.

So how you organize your classes libraries or name mappings would mostly depends on your situation.

for me TC is flexible to used in different situations (at least most I have encountered)

So you have to do some research what & how would be best for you.

Having said that there are some general guidelines how TC would used in best way.

Mainly how you organize name-mapping. Those are discussed over and over again in this forum  you can search and find.

But if you have specific scenarios you would like to know how to tackle, forum could be able to help you.