If you're on Mac or Linux, press Ctrl+D to exit.

If you regularly switch between platforms and you accidentally press Ctrl+Z on a Unix-a-like system, you will inadvertently suspend the Python interpreter and return to your operating system shell. To reactivate Python by making it a foreground process again, simply run the fg command:

$ fg

Now press Enter and couple of times to get the triple arrow Python prompt back:

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