def test_drop():
assert list(drop(3, 'ABCDE')) == list('DE')
assert list(drop(1, (3, 2, 1))) == list((2, 1))
def test_drop():
assert list(drop(3, 'ABCDE')) == list('DE')
assert list(drop(1, (3, 2, 1))) == list((2, 1))
def drop_gaps_because_insertion_offsets(A, off_pos):
'''remove those N values that are the minimum of those greater than the offset
position, where N is offset'''
off, pos = off_pos
before, after = partition(lambda x: x >= pos, A)
return itertools.chain.from_iterable([before, drop(off, imap(lambda x: x+off, after))])
