Create virtual environment.
python3 -m venv ENVIRONMENTNAME
Enter and activate virtual environment.
cd ENVIRONMENTNAME/lib/python3/site-packages
source ../../../bin/activate
Install dependencies and create and test code.
python3 -m pip install DEPENDENCY
vim CODE.py
python3 CODE.py
Cleanup and create zip.
python3 -m pip uninstall setuptools pip
zip -r ../LAMBDA.zip *
Now you can create your lambda function and upload the zip file. Also remember to update the handler to call your primary .py file and initial function.