Add Test to Explicitly Check Private Modules Exposed via API

[WillAyd]

This is a follow up to this conversation:

#25884 (comment)

Want to update test_api to explicitly check private modules that may also be in the namespace

[ryankarlos]

@WillAyd Can I have a go at this ? If I understand correctly, the current test checks exclude private modules in the namespace - does the additional test need to go in pandas/tests/api/test_api.py or a separate file with a new Base class which only checks for private modules in the namespace ? Alternatively i'm guessing a new method check_private could be included with the existing Base class and another test added in the same file ?

[WillAyd]

@ryankarlos for sure! I think you can just remove the exclusion of private modules and list them out explicitly as part of the existing test

[ryankarlos]

@WillAyd Thanks, will work on it !