Missing Packages

In order to add missing packages that are available in pip add a single cell at the beginning of your kernel with just this line:

!pip install package

For this to work you have to enable temporarily internet access for your kernel. It is important that you check the availability of the package in pip. Execute one time that cell and after it finishes disable internet access if not required. The rest of cells in your kernel will have access to the package from now on.