New in version 1.1.
Truncate sequence to target_sum:
abjad> from abjad.tools import sequencetools
abjad> for n in range(10):
... print n, sequencetools.truncate_sequence_to_sum([-1, 2, -3, 4, -5, 6, -7, 8, -9, 10], n)
...
0 []
1 [-1, 2]
2 [-1, 2, -3, 4]
3 [-1, 2, -3, 4, -5, 6]
4 [-1, 2, -3, 4, -5, 6, -7, 8]
5 [-1, 2, -3, 4, -5, 6, -7, 8, -9, 10]
6 [-1, 2, -3, 4, -5, 6, -7, 8, -9, 10]
7 [-1, 2, -3, 4, -5, 6, -7, 8, -9, 10]
8 [-1, 2, -3, 4, -5, 6, -7, 8, -9, 10]
9 [-1, 2, -3, 4, -5, 6, -7, 8, -9, 10]
Return empty list when target_sum is 0:
abjad> sequencetools.truncate_sequence_to_sum([1, 2, 3, 4, 5], 0)
[]
Raise type error when sequence is not a list.
Raise value error on negative target_sum.
Return new list.
Changed in version 2.0: renamed sequencetools.truncate_to_sum() to sequencetools.truncate_sequence_to_sum().