How to programmatically stop a program in Jupyter Notebook?

[jefsummers]

Another option is wrapping in a try/except block and raising an exception. You could just raise without the try except if you dont mind seeing the traceback

try:

    for i in range(5):
        print(i)
        if i == 3:
            raise UserWarning('Exit Early')
    print('foobar')
except:
    pass