Splitting a list based on a delimiter word

by 
import itertools

lst = ['A', 'WORD', 'B' , 'C' , 'WORD' , 'D']
w = 'WORD'

spl = [list(y) for x, y in itertools.groupby(lst, lambda z: z == w) if not x]

this creates a splitted list without delimiters, which looks more logical to me:

[['A'], ['B', 'C'], ['D']]

If you insist on delimiters to be included, this should do the trick:

spl = [[]]
for x, y in itertools.groupby(lst, lambda z: z == w):
    if x: spl.append([])
    spl[-1].extend(y)

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