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```from itertools import chain, combinations

def partition(iterable, chain=chain, map=map):
s = iterable if hasattr(iterable, '__getslice__') else tuple(iterable)
n = len(s)
first, middle, last = [0], range(1, n), [n]
getslice = s.__getslice__
return [map(getslice, chain(first, div), chain(div, last))
for i in range(n) for div in combinations(middle, i)]

>>> from pprint import pprint
>>> pprint(partition('abcdef'))
[['abcdef'],
['a', 'bcdef'],
['ab', 'cdef'],
['abc', 'def'],
['abcd', 'ef'],
['abcde', 'f'],
['a', 'b', 'cdef'],
['a', 'bc', 'def'],
['a', 'bcd', 'ef'],
['a', 'bcde', 'f'],
['ab', 'c', 'def'],
['ab', 'cd', 'ef'],
['ab', 'cde', 'f'],
['abc', 'd', 'ef'],
['abc', 'de', 'f'],
['abcd', 'e', 'f'],
['a', 'b', 'c', 'def'],
['a', 'b', 'cd', 'ef'],
['a', 'b', 'cde', 'f'],
['a', 'bc', 'd', 'ef'],
['a', 'bc', 'de', 'f'],
['a', 'bcd', 'e', 'f'],
['ab', 'c', 'd', 'ef'],
['ab', 'c', 'de', 'f'],
['ab', 'cd', 'e', 'f'],
['abc', 'd', 'e', 'f'],
['a', 'b', 'c', 'd', 'ef'],
['a', 'b', 'c', 'de', 'f'],
['a', 'b', 'cd', 'e', 'f'],
['a', 'bc', 'd', 'e', 'f'],
['ab', 'c', 'd', 'e', 'f'],
['a', 'b', 'c', 'd', 'e', 'f']]
```