This skill uses https://github.com/anjishnu/ask-alexa-pykit. Using pip does not work.
git clone https://github.com/anjishnu/ask-alexa-pykit.git
# copy ask folder into project-dir
create local Venv for boto3 (if needed)
cd alexa-my-reminders
virtualenv venv
source venv/bin/activate
pip install boto3
Deploy
zip -r lambda.zip ./*