Code Obfuscation in Jupyter/Databricks Notebooks

As we are having reusable functions in spark ETL notebooks in AWS EMR - Jupyter, we have to obfuscate/ secure the source code present in a particular notebook. By default, ETL notebooks provide the notebooks view access to group members within the service/ workspace account so that code can easily be interpreted by others.

please advise the best way to obfuscate/ secure the code present in the notebooks