def test_triad_alteration(self):
sds = list(itertools.product(alterations, scale_degrees_major))
for alt, sd in sds:
with self.subTest(sd=sd, alt=alt):
r = harmalysis.parse(alt + sd)
self.assertEqual(r.chord.scale_degree, sd)
self.assertEqual(r.chord.scale_degree_alteration, alt)
def test_diatonic_sevenths(self):
queries = {
'I7': 'CM3P5M7',
'ii7': 'Dm3P5m7',
'iii7': 'Em3P5m7',
'IV7': 'FM3P5M7',
'V7': 'GM3P5m7',
'vi7': 'Am3P5m7',
'viio7': 'Bm3D5m7'
}
for label, intervals in queries.items():
with self.subTest(label=label, i=intervals):
r = harmalysis.parse(label)
self.assertEqual(str(r.chord), intervals)
def get_dataframe_from_file(filename):
score = music21.converter.parse(filename)
labels = {}
for n in score.flat.notesAndRests:
if n.lyric:
label = harmalysis.parse(n.lyric)
try:
chordlabel = harmalysis.parse(str(label.chord),
syntax='chordlabel')
except:
chordlabel = 'Unknown chord'
pass
offset = eval(str(
n.offset)) # Resolving triplets (fractions) into floats
labels[offset] = {
'annotation': n.lyric,
'chord_label': chordlabel,
'chord_inversion': label.chord.inversion,
'local_key': str(label.main_key),
'tonicized_key': str(label.secondary_key),
}
df = pd.DataFrame(labels).transpose()
return df
def test_all_minor_keys(self):
keys = list(itertools.product(keys_minor, alterations + ['']))
for key, alt in keys:
with self.subTest(key=key, alt=alt):
r = harmalysis.parse(key + alt + ':i')
self.assertEqual(str(r.main_key.tonic), key.upper() + alt)
def test_triad(self):
sds = scale_degrees_major
for sd in sds:
with self.subTest(sd=sd):
r = harmalysis.parse(sd)
self.assertEqual(r.chord.scale_degree, sd)