Merge pull request #1773 from cuthbertLab/improve-lily-open-windows

Improve Lilypond opening in Windows

Author: mscuthbert

music21/lily/translate.py

@@ -201,8 +201,11 @@ def findLilyExec(self):
     def setupTools(self):
         LILYEXEC = self.findLilyExec()
         command = [LILYEXEC, '--version']
+        platform = common.getPlatform()
+        creation_flags = subprocess.CREATE_NO_WINDOW if platform == 'win' else 0
         try:
-            with subprocess.Popen(command, stdout=subprocess.PIPE) as proc:
+            with subprocess.Popen(command, stdout=subprocess.PIPE,
+                                  creationflags=creation_flags) as proc:
                 stdout, unused = proc.communicate()
                 stdout = stdout.decode(encoding='utf-8')
                 versionString = stdout.split()[2]

music21/musicxml/m21ToXml.py

@@ -5885,10 +5885,12 @@ def romanNumeralToXml(self, rn: roman.RomanNumeral) -> Element|list[Element]:
         self.xmlRoot.append(mxHarmony)
         return mxHarmony
 
-    def chordSymbolToXml(self,
-                         cs: harmony.ChordSymbol,
-                         *,
-                         append: bool = True) -> Element|list[Element]:
+    def chordSymbolToXml(
+        self,
+        cs: harmony.ChordSymbol,
+        *,
+        append: bool = True
+    ) -> Element|list[Element]:
         # noinspection PyShadowingNames
         '''
         Convert a ChordSymbol object to either a chord (if .writeAsChord is True)
@@ -5921,7 +5923,6 @@ def chordSymbolToXml(self,
           </bass>
         </harmony>
 
-
         Now give function:
 
         >>> cs.romanNumeral = 'I64'