How do I add a Python library into my detection runtime environment?
The answer depends on the type of Panther deployment you have. Please note that these steps will only add the package to the runtime used within Panther; if you write detections locally with PAT, those detections will not have access to the new library.
Please file a support ticket to have a custom set of libraries or layer applied to your hosted instance of Panther.
Please see the instructions in Panther's System Configuration > Runtime Environment documentation on how you can add it yourself.