I need to modify a geoprocessing tool script written in python

[hamidmechouet]

Hello everybody,
I am in an internship in a company and I am asked to modify the functionality of a widget which was developed with python. the problem is that I have access to a copy of the python code which was used but I do not know where to modify the code of the widget.
the copy of the code i have is in a .ipynb file while the python files are in .py files
I don't understand anything anymore, could someone please help me?

[JohannesLindner]

.ipynb files can be opened in Jupyter Notebook, which is integrated in ArcGIS Pro. For how to open it, see this link:

Notebooks in ArcGIS Pro—ArcGIS Pro | Dokumentation

.py files can be opened in any Python IDE or text editor. The Python installation already includes a simple IDE: IDLE.