Re: musicxml2ly: AttributeError: PartGroupInfo instance has no attribute 'set_part_information'

[Dag Odenhall]

Sorry, I utterly failed to mention that I'm on LilyPond 2.19.43. Tested
both with the binaries from the website and the Fedora 23 package.

On Tue, Jun 14, 2016 at 7:11 PM, Dag Odenhall <address@hidden>
wrote:

> Hello list,
>
> I get this traceback trying to convert the Reunion demo score from
> MuseScore:
>
> musicxml2ly: Reading MusicXML from Reunion.xml ...
> musicxml2ly: Converting to LilyPond expressions...
> musicxml2ly: Converting to LilyPond expressions...
> musicxml2ly: Converting to LilyPond expressions...
> musicxml2ly: Converting to LilyPond expressions...
> musicxml2ly: Converting to LilyPond expressions...
> musicxml2ly: Converting to LilyPond expressions...
> Traceback (most recent call last):
>   File "/usr/bin/musicxml2ly", line 2986, in <module>
>     main()
>   File "/usr/bin/musicxml2ly", line 2981, in main
>     voices = convert (filename, options)
>   File "/usr/bin/musicxml2ly", line 2896, in convert
>     update_score_setup (score, part_list, voices)
>   File "/usr/bin/musicxml2ly", line 2794, in update_score_setup
>     score_structure.set_part_information (part_id, staves_info)
>   File "/usr/share/lilypond/2.19.43/python/musicexp.py", line 1941, in
> set_part_information
>     self.contents.set_part_information (part_id, staves_info)
>   File "/usr/share/lilypond/2.19.43/python/musicexp.py", line 1780, in
> set_part_information
>     c.set_part_information (part_name, staves_info)
> AttributeError: PartGroupInfo instance has no attribute
> 'set_part_information'
>
> The MusicXML file is available here:
> https://musescore.com/marcsabatella/reunion
>
> I haven't been able to reproduce this myself with a smaller score, but
> Reunion works if I remove these lines:
>
>     <part-group type="start" number="1">
>       <group-symbol>brace</group-symbol>
>       </part-group>
>
> That bit seems to be redundant anyway in this case according to the
> MusicXML specification, although it doesn't seem to be wrong either.
>
> If I add a stub set_staff_information method to PartGroupInfo it also
> works but I get this warning instead:
>
> musicxml2ly: warning: Unprocessed PartGroupInfo <__main__.PartGroupInfo
> instance at ...> encountered
>
> Maybe this is a bug in the score, or in MuseScore's MusicXML exporter?
> Even so, musicxml2ly could perhaps handle faulty scores more gracefully
> than a traceback or obscure warning. It doesn't look like a bug in the XML
> to me, though. I ran it against the schema and it only complained about
> something unrelated:
>
> The 'dynamics' attribute is invalid - The value '-1.11' is invalid
> according to its datatype 'non-negative-decimal' - The MinInclusive
> constraint failed.
>
> (which in deed seems to be an error and probably a bug in MuseScore.)
>
> Cheers,
> Dag
>