sls wsgi serve returns "Unable to import werkzeug" about serverless-wsgi HOT 2 CLOSED

Ubuntu 16.04 comes with Python 3.5 by default. The sls wsgi serve command will run the Lambda runtime python version by default, i.e. python3.6. So chances are you've set up your venv and run pip install under Python 3.5 and sls wsgi serve is running under Python 3.5 and thus not finding your packages.

You can customize your python binary using the following option, as described in the README:

custom:
  wsgi:
    app: api.app
    pythonBin: python3

However, preferably, ensure that your virtualenv and pip install is running under Python 3.6, so you run under the same version as Lambda.

from serverless-wsgi.

Is there any way to make this play nice with pyenv?

from serverless-wsgi.