I've included for you the attached Jupyter Notebook, which is the efficient frontier modeling I implemented as a part of my blog post. Accompanying blog posts can be found on my Medium account: https://medium.com/@rickykim78

The below implementations can be found in the attached notebook.

prerequisite: Quandl

pip install quandl

In order to import quandl in your environment, you first need to register and get an API key from Quandl's website