Too much nested code was likely part of the problem, but not being able to easily tell where a block of coded ended without seeing the top of the block made it difficult to work with.
That’s fair! Takes time to get used to. Modern editors make this easier by highlighting the current indent level, or can even make the top X lines of the current closure “stick” to the top of the editor for those really long blocks.
Having those features would really have made it easier. I have only ever written my python code in Sublime Text. While it is a sublime text editor, at is not ideal (compared to how it is to write Java in IntelliJ) for Python. (Maybe with addons but I never delved into that more than a few.)