My Visual Studio Code (Mac) Jupyter extension (plug-in) output was not line wrapped. It was a single unreadable output string. I had to either copy and paste into a markdown cell (where VSC line wrap config is followed) or I had to come up with Python output formatting solutions.
Then I saw a video in which the developer's cell block output was wrapping. So I went looking again. This turned out to be a lot harder than it was, say, 10 years ago. I spent at least 40 minutes, and probably more, digging through obscure corners of the internet
At last I got a hint. There is something called "notebook.output.wordWrap" that defaults to false but can be set true. If you can figure out how to set it.
I couldn't figure out how to set this value for the Jupyter Notebook extension on my Mac however. I got some hints from Microsoft's documentation on editing settings.json even though it's not correct about how to navigate to preferences. I used the ⌘, shortcut. From there I searched for "wordwrap"
You can see the result below. I needed to set Notebook > Output > Word Wrap to true. The copied JSON version of this is "notebook.output.wordWrap": true. You can see the setting in the screen shot below (click for full size).
I set this value for User and Workspace both, I assume Workspace wins but I don't know. Now my output wraps so I can read it.
There's also supposed be a metadata tag that causes a Jupyter notebook cell to scroll output but I couldn't get I too work and it felt too obscure to rely on.