Create left & right slices of a collection

slice_utils.py

from operator import itemgetter

def create_slicer(*indexes):
    """
    >>> l = list(range(10))
    >>> create_slicer(5)(l)
    ([0, 1, 2, 3, 4], [5, 6, 7, 8, 9])
    >>> create_slicer(3, 7)(l)
    ([0, 1, 2], [3, 4, 5, 6], [7, 8, 9])
    >>> create_slicer(3, 5, 7)(l)
    ([0, 1, 2], [3, 4], [5, 6], [7, 8, 9])
    """
    left = (None,) + indexes
    right = indexes + (None,)
    return itemgetter(*(slice(l, r) for l, r in zip(left, right)))