pkgutil.get_data()'s documentation[1] says it is a wrapper for importlib.abc.ResourceLoader.get_data(), but the latter's documentation[2] says the whole class is deprecated since 3.7.

Please either:

A. Formally deprecate pkgutil.get_data() (and ideally provide a "nice" alternative wrapper, so that I don't have to muck about with importlib's endless heterarchy of opaque objects which return other opaque objects).
B. Modify pkgutil.get_data() to use ResourceReader instead of ResourceLoader.
C. (A) or (B) has already been done, just document it.

[1]: https://docs.python.org/3/library/pkgutil.html#pkgutil.get_data
[2]: https://docs.python.org/3.8/library/importlib.html#importlib.abc.ResourceLoader

You can use importlib.resources to read data files and such from within a package as an alternative.