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I'd like to programmatically exit a cell early in IPython Notebook. exit(0), however, kills the kernel.
Whats the proper way to do this? I'd prefer not to split the cell or manually halt execution.
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Just import 'exit' from the code beneath into your jupyter notebook (IPython notebook) and calling 'exit()' should work. It will exit and letting you know that...
Capturing Output With %%capture IPython has a cell magic, %%capture , which captures the stdout/stderr of a cell. With this magic you can discard these streams or store them in a variable. By default, %%capture discards these streams. This is a simple way to suppress unwanted output.
IPython recognizes objects of this type, so when a line containing just exit or quit is executed, IPython actually exits. A Jupyter notebook's IPython kernel has exit and quit set to instances of the very closely related IPython.
Shift + Enter run the current cell, select below. Ctrl + Enter run selected cells. Alt + Enter run the current cell, insert below. Ctrl + S save and checkpoint.
Slightly more "proper" options:
This will get you out of all but the worst try/except blocks.
raise KeyboardInterrupt A little cleaner version of yours:
assert(False) or simply:
raise if you want to save a couple keystrokes.
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