Works first time, not second time, no code changes in between

[m_g]

Hi! Python beginner here.
In the screenshot, you can see me execute the same command twice in a row. The first time it works like it's supposed to, but the very next time I execute it (with no code between!!), I get the error message shown in the screenshot.

Any tips or knowledge as to where I should look in the code? (Also, what is the significance of the error saying "string index"?)

Thank you so much.

[deanhystad]

It is not uncommon for jupyter notebook code to run differently each time it is executed. Jupyter notebook is kind of like a spreadsheet in that calculations in a celll may affect calculations in other cells. This makes it a powerful tool for doing what-if type analysis, but can make it more difficult to debug than a Python program which will run the same way every time.

I don't understand what name[547] is supposed to do. Please explain.

The significance is that name probably isn't a str the first time cell 71 is run. In cell 71 you use "name" to iterate through a list (I think) of str objects. Now "name" is a str, and a short str at that (maybe "HR 5666?).