use single quote

Author: oxygen-dioxide

music21/midi/tests.py

@@ -1537,19 +1537,19 @@ def testExportUnpitched(self):
         self.assertEqual([ev.pitch for ev in note_ons], [67, 60, 60])
 
     def testMidiImportLyrics(self):
-        lyricFactZh = ["明", "山", "涌", "水", "郁", "郁", "葱", "", "葱",
-                        "钟", "灵", "毓", "秀", "海", "天", "", "东",
-                        "济", "济", "多", "士", "四", "方", "所", "", "崇",
-                        "早", "", "育", "", "文", "明", "", "种"]
-        lyricFactKo = ["빛", "날", "세", "라", "영", "웅", "열", "", "사",
-                        "만", "세", "불", "망", "하", "실", "", "이",
-                        "옛", "적", "이", "나", "지", "금", "이", "", "나",
-                        "항", "상", "앙", "모", "합", "니", "", "다"]
+        lyricFactZh = ['明', '山', '涌', '水', '郁', '郁', '葱', '', '葱',
+                        '钟', '灵', '毓', '秀', '海', '天', '', '东',
+                        '济', '济', '多', '士', '四', '方', '所', '', '崇',
+                        '早', '', '育', '', '文', '明', '', '种']
+        lyricFactKo = ['빛', '날', '세', '라', '영', '웅', '열', '', '사',
+                        '만', '세', '불', '망', '하', '실', '', '이',
+                        '옛', '적', '이', '나', '지', '금', '이', '', '나',
+                        '항', '상', '앙', '모', '합', '니', '', '다']
         testCases = [
-            ("test18.mid", "utf-8", lyricFactZh),
-            ("test19.mid", "gbk", lyricFactZh),
-            ("test20.mid", "utf-8", lyricFactKo),
-            ("test21.mid", "euc-kr", lyricFactKo),
+            ('test18.mid', 'utf-8', lyricFactZh),
+            ('test19.mid', 'gbk', lyricFactZh),
+            ('test20.mid', 'utf-8', lyricFactKo),
+            ('test21.mid', 'euc-kr', lyricFactKo),
         ]
         for (filename, encoding, lyricFact) in testCases:
             fp = common.getSourceFilePath() / 'midi' / 'testPrimitive' / filename