My typical workflow would be to first write my Python functions in JupyterLab,
and finally write them into a Python script using the Jupyter magic command:
%%writefile -a my_func.py.
Image for reference, image credit to here:
It works pretty well most of the time; however, sometimes I would encounter error
TabError: inconsistent use of tabs and spaces in indentation. If it’s just a
small function, I would fix it by rewriting the function. But today this
error came up again and it occured in multiple functions, I decided to Google
it (couldn’t find a good answer from ChatGPT 
) and finally found this nice
command in Vim: :retab to fix the indentation error in my code.
Check this stackoverflow post to learn more.