Get all combinations of list elements not ignoring position in Python

Question

I want to combine all elements of a list into sublists (not tuples) with a specified length.

The itertools.combinations_with_replacement generator does nearly what I want to achieve:

>>> list(itertools.combinations_with_replacement([1,2],2))
[(1, 1), (1, 2), (2, 2)]

There are only two things I dislike: It creates tuples instead of sublists (what I could change with a map), and it misses the element (2,1) in the example above.

Is there any builtin module in Python 2 that does what I want? If not, is there any simple way to at least get combinations_with_replacements (or any other module function) to generate the missing element in the provided example?

Answer 1

maybe:

>>> from itertools import product
>>> list(product([1, 2], repeat=2))
[(1, 1), (1, 2), (2, 1), (2, 2)]