Please excuse the faulty logic used throughout this code (I am a musician that is unable to find a program that will do what I want). This is what I am trying to accomplish in this music program using Jython:
The program generates 3000 notes (line 81). It starts by generating 10 notes (lines 83 – 105). A choice is made to select a pitch (line 85) and loops in case the pitch is out of range. After 10 pitches have been generated, it generates a sequence of pitches that are transposed (lines 107 – 189). A choice is made to select a transposition (line 109) and loops in case the transposition creates a sequence in which one of the members of the sequence is out of range. Another choice is made to select the number of pitches in the sequence (line 145). Another 10 notes are set to be generated (line 181) and loops to check if less than 3000 notes have been generated.
Currently, I am getting a “no viable alternative at input ‘t’” which I am unable to correct, but as you can probably tell from the code, it is probably the least of my worries. This is my code:
from music import *
from random import *
solo = Phrase()
solo.setTempo(90)
lastFiveSoloPitchesForSequence = []
sequenceChoice = []
twoPitchSequence = []
threePitchSequence = []
fourPitchSequence = []
fivePitchSequence = []
sequenceChoice = []
t = 0
transpositionOptions = [(-2), (-1), 1, 2]
a = 0 # index for transposed first pitch in sequence
b = 0 # index for transposed second pitch in sequence
c = 0 # index for transposed third pitch in sequence
d = 0 # index for transposed fourth pitch in sequence
e = 0 # index for transposed fifth pitch in sequence
indexOfFirstPitchInSequenceInListOfAvailablePitches = 0
firstPitchInSequence = 0
indexOfSecondPitchInSequenceInListOfAvailablePitches = 0
secondPitchInSequence = 0
indexOfThirdPitchInSequenceInListOfAvailablePitches = 0
thirdPitchInSequence = 0
indexOfFourthPitchInSequenceInListOfAvailablePitches = 0
fourthPitchInSequence = 0
indexOfFifthPitchInSequenceInListOfAvailablePitches = 0
fifthPitchInSequence = 0
sequenceOptions = [1, 2, 3, 4]
durations = []
pitches = []
pitchIndex = 0
counter = 0
numberOfNotesInSolo = 0
listOfAvailablePitches = [83, 84, 86, 87, 89, 91, 94, 96, 97, 99, 100, 102, 104]
pitch = choice(listOfAvailablePitches)
pitchIndex = listOfAvailablePitches.index(pitch)
weightedProbabilitiesForPitches = [{pitchIndex + 1} * 60 + {pitchIndex - 1} * 60 + {pitchIndex + 2} * 50 + {pitchIndex - 2} * 50 + {pitchIndex + 3} * 40 + {pitchIndex - 3} * 40 + {pitchIndex + 4} * 20 + {pitchIndex - 4} * 20 + {pitchIndex + 5} * 10 + {pitchIndex - 5} * 10]
while numberOfNotesInSolo < 3000:
while counter < 10:
pitchIndex = choice(weightedProbabilitiesForPitches)
if pitchIndex < 13 and pitchIndex > -1:
pitch = listOfAvailablePitches[pitchIndex]
pitches.append(pitch)
weightedProbabilitiesForDurations = [SN] * 150 + [EN] * 50 + [DEN] * 25 + [QN] * 0 + [DQN] * 0
duration = choice(weightedProbabilitiesForDurations)
durations.append(duration)
numberOfNotesInSolo = numberOfNotesInSolo + 1
counter = counter + 1
else:
pitchIndex = choice(weightedProbabilitiesForPitches)
lastFiveSoloPitchesForSequence = [pitches[-5], pitches[-4], pitches[-3], pitches[-2], [pitches[-1]]
t = choice(transpositionOptions)
fivePitchSequence = [pitches[-5], pitches[-4], pitches[-3], pitches[-2], pitches[-1]]
indexOfFirstPitchInSequenceInListOfAvailablePitches = listOfAvailablePitches.index{pitches[-5]}
a = indexOfFirstPitchInSequenceInListOfAvailablePitches - t
firstPitchInSequence = listOfAvailablePitches[a]
indexOfSecondPitchInSequenceInListOfAvailablePitches = listOfAvailablePitches.index{pitches[-4]}
b = indexOfSecondPitchInSequenceInListOfAvailablePitches - t
secondPitchInSequence = listOfAvailablePitches(pitches[b]}
indexOfThirdPitchInSequenceInListOfAvailablePitches = listOfAvailablePitches.index{pitches[-3]}
c = indexOfThirdPitchInSequenceInListOfAvailablePitches - t
thirdPitchInSequence = listOfAvailablePitches(pitches[c]}
indexOfFourthPitchInSequenceInListOfAvailablePitches = listOfAvailablePitches.index(pitches[-2]}
d = indexOfFourthPitchInSequenceInListOfAvailablePitches - t
fourthPitchInSequence = listOfAvailablePitches(pitches[d]}
indexOfFifthPitchInSequenceInListOfAvailablePitches = listOfAvailablePitches.index{pitches[-1]}
e = indexOfFifthPitchInSequenceInListOfAvailablePitches - t
fifthPitchInSequence = listOfAvailablePitches(pitches[e])
if a < 13 and a > -1 and b < 13 and b > -1 and c < 13 and c > -1 and d < 13 and d > -1 and e < 13 and e > -1:
sequenceChoice = choice(sequenceOptions)
if sequenceChoice = 1:
twoPitchSequence = [firstPitchInSequence, secondPitchInSequence]
pitches.append[twoPitchSequence]
durations.append[durations[-2], durations[-1]]
if sequenceChoice = 2 :
threePitchSequence = [firstPitchInSequence, secondPitchInSequence, thirdPitchInSequence]
pitches.append[threePitchSequence]
durations.append[durations[-3], durations[-2], durations[-1]]
if sequenceChoice = 3:
fourPitchSequence = [firstPitchInSequence, secondPitchInSequence, thirdPitchInSequence, fourthPitchInSequence]
pitches.append[fourPitchSequence]
durations.append[durations[-4], durations[-3], durations[-2], durations[-1]]
else:
fivePitchSequence = [firstPitchInSequence, secondPitchInSequence, thirdPitchInSequence, fourthPitchInSequence, fifthPitchInSequence]
pitches.append[fivePitchSequence]
durations.append[durations[-5], durations[-4], durations[-3], durations[-2], durations[-1]]
else:
counter = 0
solo.addNoteList(pitches, durations)
print solo
Play.midi(solo)
Write.midi(solo, "solo.mid")
question from:
https://stackoverflow.com/questions/65830166/music-program-in-jython-does-not-run 
