This was the text used in the Python course I took in library school. You can download a free copy and access supporting materials (including Dr. Chuck's lectures) at https://www.py4e.com/

I purchased a physical copy of the book because complex things stick better in my brain when I read them in ink on paper rather than on a screen. Python was really hard for me in the beginning but as my professor assured us, things did start to click around week 7 or 8. At that point, I found it helpful to go back and review earlier weeks which then made much more sense. ( )