pyscales

Python musical scales handling and piano keys transposing

Quick & Dirty examples

Notes and semitones

>>> from pyscales.primitives import *

>>> Note("a") + ToneDelta(semitones=3)
<Note C0>

>>> Note("a") + ToneDelta(semitones=2)
<Note B0>

>>> Note("a") + ToneDelta(semitones=2)*2
<Note C#0>

>>> Note("a") == Note("a")
True

>>> Note("a", 1) - Note("a", 2)
<ToneDelta -12>

>>> Note("b") - ToneDelta(semitones=2)
<Note A0>

>>> Note("a") - Note("b")
<ToneDelta -2>

>>> Note("a") + ToneDelta(semitones=2)*2
<Note C#0>

Device Keyboards

>>> from pyscales import devicekeyboards
>>> x = devicekeyboards.op1_keyboard.copy()
>>> print(x.render_keys_in_ascii());print(x.render_notes_in_ascii())
 □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □   □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □  
 F0  F#0 G0  G#0 A0  A#0 B0  C1  C#1 D1  D#1 E1  F1  F#1 G1  G#1 A1  A#1 B1  C2  C#2 D2  D#2 E2 

>>> print(x.render_keys_in_ascii());print(x.render_notes_in_ascii(False))
 □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □   □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □  
 F   F#  G   G#  A   A#  B   C   C#  D   D#  E   F   F#  G   G#  A   A#  B   C   C#  D   D#  E  
 
>>> print(x.render_keys_in_ascii());print(x.render_note_scale_in_ascii(Scale(Note("C"), scaleformulas.MAJOR_FORMULA)))
 □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □   □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □  
 F0      G0      A0      B0  C1      D1      E1  F1      G1      A1      B1  C2      D2      E2
 
>>> print(x.render_keys_in_ascii());print(x.render_note_scale_in_ascii(Scale(Note("C"), scaleformulas.MINOR_FORMULA)))
 □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □   □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □  
 F0      G0  G#0     A#0     C1      D1  D#1     F1      G1  G#1     A#1     C2      D2  D#2
 
>>>  print(x.render_keys_in_ascii());print(x.render_note_scale_in_ascii(Scale(Note("C"), scaleformulas.MINOR_FORMULA)))
 □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □   □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □  
 F0      G0  G#0     A#0     C1      D1  D#1     F1      G1  G#1     A#1     C2      D2  D#2
     
>>> x.tune(semitones = 3)   # raise every key by 3 semitones
>>> print(x.render_keys_in_ascii());print(x.render_note_scale_in_ascii(Scale(Note("C"), scaleformulas.MINOR_FORMULA)))
 □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □   □   ▩   □   ▩   □   ▩   □   □   ▩   □   ▩   □  
 G#0     A#1     C0      D0  D#1     F1      G1  G#1     A#2     C1      D1  D#2     F2      G2