New in version 1.1.
Label leaves in expr with pitch numbers:
abjad> staff = Staff(leaftools.make_leaves([None, 12, [13, 14, 15], None], [(1, 4)]))
abjad> leaftools.label_leaves_in_expr_with_pitch_numbers(staff)
abjad> f(staff)
\new Staff {
r4
c''4 _ \markup { \small 12 }
<cs'' d'' ef''>4 _ \markup { \column { \small 15 \small 14 \small 13 } }
r4
}
Return none.
Changed in version 2.0: renamed label.leaf_pitch_numbers() to leaftools.label_leaves_in_expr_with_pitch_numbers().