MusicXML: Handle beam elements without number attribute

diff --git a/python/musicxml.py b/python/musicxml.py
index 0400cce2532de083414c0ebbb3a730cc75e32b75..76e33ceb7b6792b5acb3615cfe50ae3a4d920730 100644 (file)
--- a/python/musicxml.py
+++ b/python/musicxml.py
@@ -997,7 +997,10 @@ class Beam (Music_xml_spanner):
     def get_type (self):
        return self.get_text ()
     def is_primary (self):
-        return self.number == "1"
+        if hasattr (self, 'number'):
+            return self.number == "1"
+        else:
+            return True
 
 class Wavy_line (Music_xml_spanner):
     pass