PEP 562 (Module __getattr__ and __dir__) and issue with sub-interpreters

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For the PEP, I was just interested in if we could move the import of importlib in the example code. The example code for lazy submodule imports is

# lib/__init__.py

import importlib

__all__ = ['submod', ...]

def __getattr__(name):
    if name in __all__:
        return importlib.import_module("." + name, __name__)
    raise AttributeError(f"module {__name__!r} has no attribute {name!r}")

I was just wondering if we could move the import of importlib into __getattr__ as that fixes the Jep issue with sub-interpreters and organizations like scipy are following that code almost exactly. But it sounds like the PEP can’t be changed.

So then I don’t have any other changes to suggest, I was just hoping someone here might have the expertise to know how importlib could be improved or Jep could do things differently.