No import suggestion for Django Rest Framework classes in test.py

In the Django Rest Framework (3.13) the test classes (like APIClient, APITestCase) are located in a package test.py. It looks like this causes Pycharm to skip this package when doing suggestions for import. The code runs, other packages (from the rest framework) are suggested, so i assume it is the test.py name that causes this.

Am I correct and is there a way to make these classes visibel for the import suggestion algoritme?