The attached example-musicxml-display-part-bug.xml shows a minimal
example to trigger the bug. It gives this output:
musicxml2ly: Reading MusicXML from example-musicxml-display-part-bug.xml ...
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 2892, in convert
score = extract_score_structure (mxl_pl, staff_info)
File "/usr/bin/musicxml2ly", line 430, in extract_score_structure
staff = read_score_part (el)
File "/usr/bin/musicxml2ly", line 383, in read_score_part
staff.instrument_name = extract_display_text (partname)
File "/usr/bin/musicxml2ly", line 907, in extract_display_text
child = el.get_maybe_exist_named_child ("display-text")
File "/usr/share/lilypond/2.18.2/python/musicxml.py", line 114, in
get_maybe_exist_named_child
return self.get_maybe_exist_typed_child (get_class (name))
File "/usr/share/lilypond/2.18.2/python/musicxml.py", line 123, in
get_maybe_exist_typed_child
raise "More than 1 child", klass
TypeError: exceptions must be old-style classes or derived from
BaseException, not str
The original case where I ran into this is
http://www1.cpdl.org/wiki/images/5/54/Ws-mont-bvf.mxl, which says
<software>Sibelius 7.5.1</software>
<software>Direct export, not from Dolet</software>
<encoding-description>Sibelius / MusicXML 3.0</encoding-description>
I propose the attached musicxml2ly-multi-display-text.patch as a fix.
--- musicxml2ly 2020-03-05 22:30:57.558283750 -0500
+++ musicxml2ly.orig 2020-03-05 22:31:55.449670893 -0500
@@ -904,9 +904,9 @@
return elts
def extract_display_text (el):
- children = el.get_typed_children (musicxml.get_class ("display-text"))
- if children:
- return " ".join([child.get_text () for child in children])
+ child = el.get_maybe_exist_named_child ("display-text")
+ if child:
+ return child.get_text ()
else:
return False
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE score-partwise PUBLIC
"-//Recordare//DTD MusicXML 3.1 Partwise//EN"
"http://www.musicxml.org/dtds/partwise.dtd";>
<score-partwise version="3.1">
<part-list>
<score-part id="P1">
<part-name>Music</part-name>
<part-name-display>
<display-text>Player</display-text>
<display-text>One</display-text>
</part-name-display>
</score-part>
</part-list>
<part id="P1">
<measure number="1">
<attributes>
<divisions>1</divisions>
<key>
<fifths>0</fifths>
</key>
<time>
<beats>4</beats>
<beat-type>4</beat-type>
</time>
<clef>
<sign>G</sign>
<line>2</line>
</clef>
</attributes>
<note>
<pitch>
<step>C</step>
<octave>4</octave>
</pitch>
<duration>4</duration>
<type>whole</type>
</note>
</measure>
</part>
</score-partwise>
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