Agreed on all points. Notebooks really aren't that hard to maintain. They just require some slightly different rules from standard scripts. Personally, I like

Agreed on all points. Notebooks really aren't that hard to maintain. They just require some slightly different rules from standard scripts. Personally, I like to label block-global variables in capital case (like PEP8 constants), so as to make them easy to spot. Being formatted like constants also causes me to think twice about altering it after instantiation.