simple Python imports (in the lambda context)

Note, for me when I say "works locally", I mean I can run the tests

python -m pytest
===================================================================================== test session starts =====================================================================================
platform darwin -- Python 3.7.4, pytest-5.3.1, py-1.8.0, pluggy-0.13.1
rootdir: /Users/samkeen/Projects/pyhon-import-test
collected 1 item                                                                                                                                                                              

tests/unit/test_handler.py .                                                                                                                                                            [100%]

====================================================================================== 1 passed in 0.02s ======================================================================================

If i do this it works locally: from .foo import goodbye https://github.com/samkeen/python-lambda-import/blob/master/hello_world/app.py

but in lambda, I get

[ERROR] Runtime.ImportModuleError: Unable to import module 'app': attempted relative import with no known parent package

If I hack the syspath with something like

import os, sys
this_dir = os.path.dirname(os.path.abspath(__file__))
sys.path.append(this_dir)

# get rid of '.'
from foo import goodbye

https://github.com/samkeen/python-lambda-import/blob/hack-syspath/hello_world/app.py

It works locally and in Lambda, but it just seems dirty

What am I missing here??? Is there a non-syspath hacked strategy that works locally and in the lambda context?