I have been trying to install various modules that I need to have to run this script:
https://github.com/austingandy/slack-evernote/blob/master/slackwriter.py
<
AFAIK, Evernote SDK for Python 3 is not yet supported.
https://github.com/evernote/evernote-sdk-python3
This is a test SDK! The official Evernote SDK for Python doesn't support Python 3 yet; this repository is an experiment as we try to migrate.
You can try installing manually from the link above or downgrade to python2 in your virtual env.