PitchClassConverter.py

"""
Is there another solution besides elif statements? Dictionary?
Perhaps I could pull from a tuple?  .count()?
Should I define a function for reordering a scale?
"""

def NoteNameToPitchClass(noteName):
    if noteName.lower() == "c":
        return 0
    elif noteName.lower() == "c#" or noteName.lower() == "db":
        return 1
    elif noteName.lower() == "d":
        return 2
    elif noteName.lower() == "d#" or noteName.lower() == "eb":
        return 3
    elif noteName.lower() == "e":
        return 4
    elif noteName.lower() == "f":
        return 5
    elif noteName.lower() == "f#" or noteName.lower() == "gb":
        return 6
    elif noteName.lower() == "g":
        return 7
    elif noteName.lower() == "g#" or noteName.lower() == "ab":
        return 8
    elif noteName.lower() == "a":
        return 9
    elif noteName.lower() == "a#" or noteName.lower() == "bb":
        return 10
    elif noteName.lower() == "b":
        return 11
    else:
        return -1


def PitchClassToNoteName(pitchClass):
    if pitchClass == 0:
        return "C"
    elif pitchClass == 1:
        return "C#/Db"
    elif pitchClass == 2:
        return "D"
    elif pitchClass == 3:
        return "D#/Eb"
    elif pitchClass == 4:
        return "E"
    elif pitchClass == 5:
        return "F"
    elif pitchClass == 6:
        return "F#/Gb"
    elif pitchClass == 7:
        return "G"
    elif pitchClass == 8:
        return "G#/Ab"
    elif pitchClass == 9:
        return "A"
    elif pitchClass == 10:
        return "A#/Bb"
    elif pitchClass == 11:
        return "B"
    else:
        return "error"

def TransposePitchClassSetToZero(PitchClassSet):
    TransposedPitchClassSet = []
    transpositionFactor = PitchClassSet[0]
    for x in range(len(PitchClassSet)):
        TransposedPitchClassSet.append(((PitchClassSet[x] - transpositionFactor) + 12) % 12)
    return TransposedPitchClassSet

def TransposePitchClassSet(PitchClassSet, transpositionFactor):
    TransposedPitchClassSet = []
    for x in range(len(PitchClassSet)):
        TransposedPitchClassSet.append((PitchClassSet[x] + transpositionFactor) % 12)
    return TransposedPitchClassSet

#Go through each function and cast variable types