How to slice list into contiguous groups of non-zero integers in Python

Question

Can't seem to find a clue to this online and can't figure it out myself so:

How would I go about slicing a list so that I return a list of slices of contiguous non-zero integers. ie:

data = [3, 7, 4, 0, 1, 3, 7]

and I want to produce:

slices = [[3, 7, 4], [1, 3, 7]]

I have tried various methods of iterating through the list, have been leaning towards a generator that lets me know when the contiguous groups start and stop, by testing if there is a 0 before or after, but then I am a bit stumped.

Answer 1

import itertools
[ list(x[1]) for x in itertools.groupby(data, lambda x: x == 0) if not x[0] ]