如何在music21中制作这两个小节的乐谱

Question

I have two adjacent measures here:

My problem is how to make this piece of music with music21 python package.

from music21 import *
s = stream.Stream();
n = note.Note('C5',quarterLength = 0.5);
s.append(n);
n = note.Note('A4',quarterLength = 0.5);
s.append(n);
n = note.Note('C5',quarterLength = 0.5);
s.append(n);
n = note.Note('A4',quarterLength = 0.5);
s.append(n);
n = note.Note('C5',quarterLength = 0.5);
s.append(n);
n = note.Note('A4',quarterLength = 0.5);
s.append(n);
n = note.Note('C5',quarterLength = 0.5);
s.append(n);
n = note.Note('A4',quarterLength = 0.5);
s.append(n);
c = note.Note('E4',quarterLength = 8);
s.insertIntoNoteOrChord(0, c);
s.show('lily.pdf')

The error coming was

s.insertIntoNoteOrChord(0, c); music21.exceptions21.StreamException: more than one element found at the specified offset

How can I rectify the error?

Edit:

from music21 import note,stream
s = stream.Measure();
c = note.Note('E4',quarterLength = 8);
s.insert(0, c)
n = note.Note('C5',quarterLength = 0.5);
s.append(n);
n = note.Note('A4',quarterLength = 0.5);
s.append(n);
n = note.Note('C5',quarterLength = 0.5);
s.append(n);
n = note.Note('A4',quarterLength = 0.5);
s.append(n);
n = note.Note('C5',quarterLength = 0.5);
s.append(n);
n = note.Note('A4',quarterLength = 0.5);
s.append(n);
n = note.Note('C5',quarterLength = 0.5);
s.append(n);
n = note.Note('A4',quarterLength = 0.5);
s.append(n);

s.show('lily.pdf')

is giving output as

Answer 1

Your command s.insertIntoNoteOrChord(0, c); is unnecessary. You're trying to insert the tied whole notes into the first measure, not into a note or chord. You should just s.insert(0, c) .

Also, there are ways to batch insert, see the docs for Stream.insert() .

EDIT -- for example:

from music21 import note,stream
s = stream.Stream()  # sorry, your instinct to use a stream was probably good

n = note.Note('C5',quarterLength = 0.5)
s.append(n)
n = note.Note('A4',quarterLength = 0.5)
s.append(n)
n = note.Note('C5',quarterLength = 0.5)
s.append(n)
n = note.Note('A4',quarterLength = 0.5)
s.append(n)
n = note.Note('C5',quarterLength = 0.5)
s.append(n)
n = note.Note('A4',quarterLength = 0.5)
s.append(n)
n = note.Note('C5',quarterLength = 0.5)
s.append(n)
n = note.Note('A4',quarterLength = 0.5)
s.append(n)
c = note.Note('E4',quarterLength = 8)
s.insert(0, c)
out1 = s.makeVoices()
out2 = out1.makeNotation()
out2.show('lily.pdf')

Much better with .show('musicxml.pdf') :