New in version 2.0.
Iterate elements in sequence n at a time:
abjad> from abjad.tools import sequencetools
abjad> list(sequencetools.iterate_sequence_nwise_strict(range(10), 4))
[(0, 1, 2, 3), (1, 2, 3, 4), (2, 3, 4, 5), (3, 4, 5, 6), (4, 5, 6, 7), (5, 6, 7, 8), (6, 7, 8, 9)]
Return generator.