CloudxLab is a managed service where the configurations and installations are taken care of by us. We have already set up most of the tools needed for practice.
Please contact us at firstname.lastname@example.org if you are looking for other tools and we will try our best to make it available on the cluster. We are in pursuit of providing the best experience for our learning. If the tools/library you need is open source or free and it could be useful to more than 5% users, we would like to install it.
Also, you can install various libraries in your own environment such as virtualenv that do not require any administration.