check.assert_wf

abjad.tools.check.assert_wf(expr)

Check expr for well-formedness.

If expr is not well-formed, report violators and raise WellFormednessError.

abjad> t = Staff(construct.scale(4))
abjad> Beam(t[:])
abjad> t._music.pop( )
abjad> check.assert_wf(t)
0 /    1 beams overlapping
0 /    1 containers empty
0 /    3 flags misrepresented
0 /    0 glissandi overlapping
0 /    0 hairpins intermarked
0 /    0 hairpins short
0 /    4 ids duplicated
0 /    0 measures improperly filled
0 /    0 measures misdurated
0 /    0 measures nested
0 /    0 octavations overlapping
0 /    4 parents missing
0 /    3 quarters beamed
1 /    1 spanners discontiguous
0 /    3 ties mispitched

WellFormednessError

If expr is well-formed, return None.

abjad> t = Staff(construct.scale(4))
abjad> Beam(t[:])
abjad> t.pop( )
abjad> check.assert_wf(t)

Previous topic

check.assert_components

Next topic

check.assess_components

This Page