No Output Displaying in Jupyter for plt.show()

There’s still asterisk in the indicator brackets for each of those cells, meaning that they didn’t complete running. Nothing is going to show up until that concludes.

Is there any chance you can switch kernels? The pyolite kernel/Jupyterlite is experimental and can sometimes get stuck in a glitch. If stuck with pyolite: It is important when starting the notebook with a pyolite kernel to give it time to completely run the startup process and go to ‘not busy’ indicator in the activity indicator in the upper right side before initiating running any of your code.
If you’ve already tried restarting the kernel patiently and then run the code again …
Sometimes duplicating the notebook and starting that copy patiently can effectively result in bypassing glitches such as these. Or try it in an incognito window in your browser. Or try it a different browser.

Keep in mind, this isn’t you causing this issue. Hopefully, you’ve had good experiences other times with Jupyter and will have more soon.