python - Music21 and MuseScore can't display .png in jupyter notebook

Question

I run this very simple set of commands to display some sheet music:

import music21
music21.environment.set("musescoreDirectPNGPath", "/snap/bin/musescore.mscore")
bwv295 = music21.corpus.parse('bach/bwv295')
bwv295.show()

I am getting the error: SubConverterFileIOException: No png file for /tmp/music21/tmpwh3jnppk.png (such as /tmp/music21/tmpwh3jnppk-1.png) was found. The conversion to png failed

I have made sure to install libpng. I also checked the debug of jupyter and it is saying a couple things:

• cannot load canberra-gtk-module (I sudo apt-get installed libcanberra-gtk-module)
• unable to load printer plugin "qtubuntu-print"
• File "/tmp/music21/tmpwh3jnppk.xml" not found.

But, my temp directory definitely contains this file with populated information

Any thoughts?

question from:https://stackoverflow.com/questions/65545641/music21-and-musescore-cant-display-png-in-jupyter-notebook

Answer 1

The solution here is that musescore was not properly installed. I installed the standalone app and installed it through snap

Turns out you should just install it via the command line, then my sequence of commands will work

sudo add-apt-repository ppa:mscore-ubuntu/mscore3-stable
sudo apt-get update
sudo apt install musescore3