New in version 1.1.
Set default accidental spelling to sharps:
abjad> from abjad.tools import configurationtools
abjad> configurationtools.set_default_accidental_spelling('sharps')
abjad> [Note(13, (1, 4)), Note(15, (1, 4))]
[Note("cs''4"), Note("ds''4")]
Set default accidental spelling to flats:
abjad> configurationtools.set_default_accidental_spelling('flats')
abjad> [Note(13, (1, 4)), Note(15, (1, 4))]
[Note("df''4"), Note("ef''4")]
Set default accidental spelling to mixed:
abjad> configurationtools.set_default_accidental_spelling()
abjad> [Note(13, (1, 4)), Note(15, (1, 4))]
[Note("cs''4"), Note("ef''4")]
Mixed is system default.
Mixed test case must appear last here for doc tests to check correctly.
Return none.
Changed in version 2.0: renamed pitchtools.change_default_accidental_spelling() to configurationtools.set_default_accidental_spelling().