Music21 关联 MuseScore 和 Lilypond

Posted 2021-02-01 yvivid

在python安装 music21后，需要关联 musescore 或 lilypond 才能可以用图形化的形式看到 乐谱。

因此 在安装 music21后，需要配置环境变量

首先、 通过 导入music21：

from music21 import *

然后，查看环境变量有哪些。

>>>environment.keys()

[‘directoryScratch‘, ‘lilypondPath‘, ‘lilypondVersion‘, ‘lilypondFormat‘, ‘lilypondBackend‘, 
‘musicxmlPath‘, ‘midiPath‘, ‘graphicsPath‘, ‘vectorPath‘, ‘pdfPath‘, ‘braillePath‘, ‘musescoreDirectPNGPath‘, 
‘showFormat‘, ‘writeFormat‘, ‘ipythonShowFormat‘, ‘autoDownload‘, ‘debug‘, ‘warnings‘, ‘localCorpusSettings‘, 
‘localCorporaSettings‘, ‘manualCoreCorpusPath‘, ‘localCorpusPath‘]

或者是 

>>> us = environment.UserSettings()
>>> us.keys()
[‘directoryScratch‘, ‘lilypondPath‘, ‘lilypondVersion‘, ‘lilypondFormat‘, ‘lilypondBackend‘, ‘musicxmlPath‘, 
‘midiPath‘, ‘graphicsPath‘, ‘vectorPath‘, ‘pdfPath‘, ‘braillePath‘, ‘musescoreDirectPNGPath‘, ‘showFormat‘, 
‘writeFormat‘, ‘ipythonShowFormat‘, ‘autoDownload‘, ‘debug‘, ‘warnings‘, ‘localCorpusSettings‘, 
‘localCorporaSettings‘, ‘manualCoreCorpusPath‘, ‘localCorpusPath‘]

 

后续统一使用后者进行配置。

对于 lilypond的配置（路径请自行编写）：

us[‘lilypondPath‘] = ‘C:/Program Files (x86)/LilyPond/usr/bin/lilypond.exe‘

对于 musescore的配置： 

us[‘musescoreDirectPNGPath‘] = "C:/Program Files (x86)/MuseScore 2/bin/MuseScore.exe"
us[‘musicxmlPath‘] = "C:/Program Files (x86)/MuseScore 2/bin/MuseScore.exe"

 

如果 keys()里面没有 相关配置，可以先set出相关配置项。

environment.set("musescoreDirectPNGPath", "C:/Program Files (x86)/MuseScore 2/bin/MuseScore.exe")
environment.set("musicxmlPath", "C:/Program Files (x86)/MuseScore 2/bin/MuseScore.exe")

 

参考：

1、http://web.mit.edu/music21/doc/usersGuide/usersGuide_08_installingMusicXML.html

2、https://stackoverflow.com/questions/25879764/creating-images-of-notes-in-music21