Upload the Python files directly to the Databricks workspace as a library without any package structure, and reference them in each notebook.

Use the Databricks CLI to create a library with a Python package, ensuring the inclusion of __init__.py files for proper package structure, and reference this package in the notebooks.

Embed the Python code directly into each notebook using %pip magic commands to install the required packages at runtime.

Manually copy the Python files into each notebook's directory and reference them using relative paths, updating each file individually when changes are made.