def build_scale(key, mode='major', octaves=1):
'''
Build a scale from a refference note.
Parameters
----------
key : Musical key.
Can be setted as a parameter while building scale.
Key should be written as "C", for C and "C#" for C sharp and
"Cb" for C flat.
mode : Musica mode.
'major' and 'minor' and 'pentatonic' are accetable parameters.
octaves : int
number of octaves to be evaluated.
Returns
-------
scale_notes : sebastian.core.elements
Sequence of scale notes.
'''
if mode == 'major':
scale = notes.major_scale
elif mode == 'minor':
scale = notes.minor_scale
elif mode == 'pentatonic':
scale = pentatonic_scale
elif mode == 'blues':
scale = blues_scale
scale_notes = [notes.name(s).lower() + ("'" * octave)
for octave in range(octaves)
for s in scale(notes.value(key))]
return scale_notes
def test_note_names(self):
from sebastian.core.notes import major_scale, value, name
gsharp_major_names = [name(x) for x in major_scale(value("G#"))]
assert gsharp_major_names == ['G#', 'A#', 'B#', 'C#', 'D#', 'E#', 'Fx']
def test_note_value(self):
from sebastian.core.notes import value
assert value("G#") == 6
def test_note_names(self):
from sebastian.core.notes import major_scale, value, name
gsharp_major_names = [name(x) for x in major_scale(value("G#"))]
assert gsharp_major_names == ['G#', 'A#', 'B#', 'C#', 'D#', 'E#', 'Fx']
def test_note_value(self):
from sebastian.core.notes import value
assert value("G#") == 6
