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import random
class PitchReverse:
def __init__( self ):
self.pitchList = []
def reorderPitch( self, notesList ):
self.extractOneValue(notesList)
self.pitchList.reverse()
for i in range(len(notesList)):
notesList[i].pitch = self.pitchList[i]
return notesList
def extractOneValue( self, notesList ):
self.pitchList = []
for note in notesList:
self.pitchList.append(note.pitch)
class PitchSort( PitchReverse ):
def __init__( self ):
PitchReverse.__init__( self )
def reorderPitch( self, notesList ):
PitchReverse.extractOneValue(self, notesList)
self.pitchList.sort()
for i in range(len(notesList)):
notesList[i].pitch = self.pitchList[i]
return notesList
class PitchShuffle( PitchReverse ):
def __init__( self ):
PitchReverse.__init__ ( self )
def reorderPitch( self, notesList ):
PitchReverse.extractOneValue(self, notesList)
self.pitchList = random.sample(self.pitchList, len(self.pitchList))
for i in range(len(notesList)):
notesList[i].pitch = self.pitchList[i]
return notesList
class PitchMarkov:
def __init__( self ):
self.originalList = []
def getNewList( self, notesList, order=1 ):
self.playedNotes = []
self.extractOneValue( notesList, order )
self.playedNotes = self.originalList[:order]
for i in range(len(self.originalList) - order):
self.playedNotes.append(self.pickupNewValue(order))
for i in range(len(notesList)):
notesList[i].pitch = self.playedNotes[i]
return notesList
def extractOneValue( self, notesList, order ):
self.originalList = []
for note in notesList:
self.originalList.append(note.pitch)
for i in range(order):
self.originalList.append(self.originalList[i])
def pickupNewValue( self, order ):
condition = False
self.probTable = []
for ilist in range(len(self.originalList) - order):
for iord in range(order):
if self.playedNotes[len(self.playedNotes) - (iord + 1)] != self.originalList[(order - 1) + ilist - iord]:
condition = False
break
else:
condition = True
if condition == True:
self.probTable.append(self.originalList[ilist + order])
return self.probTable[random.randint(0, (len(self.probTable) - 1))]
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