Install the packages you need to make your data app exactly how you want it
In Databutton, you can install all python packages available on pypi and on github. By going to Configure -> Packages (or ctrl/cmd+k -> packages) you can specify packages in the regular requirements.txt format.
There are some packages that are preinstalled and non-optional which are greyed out. Some examples of valid packages are:
install latest version
install exact version
build and install the latest from a github repo