python - Replacing a string with counts of streaks -

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let's have string of following form:

"000000111100011100001011000000001111"

and want create list containing lengths of 1-streaks:

[4, 3, 1, 2, 4]

is there nice one-liner this?

if don't mind from itertools import groupby...

>>> itertools import groupby >>> [len(list(g)) k, g in groupby(s) if k == '1'] [4, 3, 1, 2, 4]

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