Instead of the package installing in:
and install it globally and have it accessed from any Linux user, install it with sudo -H flag. For example:
sudo -H pip3 install seaborn
The above installs it in /usr/local/lib/python3.5/dist-packages and is accessible globally by any user or Python application.
This issue arose when I was trying to run a Jupyter notebook. There was a missing seaborn Python package but it was only installed in the .local folder of the logged in user (/home/user/.local).