[charleover]

This works for me in Chrome 90 on Windows

  import matplotlib.pyplot as plt
  plt.plot([1,2,3,4,5], [1,4,3,2,5])
  plt.show()

[mjburgess]

Thanks -- it looks like the issue occurs when the import is in a different cell; or when the plotting cell is being re-run.

Try splitting cells on the first line and re-running the second.

I quickly get Recursion-Depth-Max errors.

[scoopertrooper]

I just split the cells and it worked fine. Weird.