Importlib custom importers example?

Can you help me to find some good examples for importlib? I remember seeing one that loaded modules from sqlite, and one that loaded from the network, but I can’t find it now. It would need to be complete enough that https://docs.python.org/3/library/inspect.html#inspect.getsourcelines works. Related question:

You might want to have a look at the code for https://aroberge.github.io/ideas/docs/html/.

One example about loading code from the network is included in the latest edition of the Python cookbook.

Thanks.

It looks like I can make the code do what I want if I inherit from SourceLoader instead of InspectLoader. The get_data() method is used to execute the module, and get_source() is only called when the source code needs to be displayed. Even though inspect.getsource(module) works for InspectLoader, that source code is not shown by pdb or in tracebacks until we inherit from SourceLoader instead of InspectLoader.