Fix warnings...

worlds/musedash/MuseDashCollection.py

@@ -84,17 +84,17 @@ def __init__(self) -> None:
             if song_name in self.DIFF_OVERRIDES:
                 # These songs use non-standard difficulty values. Which are being overriden with standard values.
                 # But also avoid filling any missing difficulties (i.e. 0s) with a difficulty value.
-                if sections[4] is not '0':
+                if sections[4] != '0':
                     diff_of_easy = 4
                 else:
                     diff_of_easy = None
 
-                if sections[5] is not '0':
+                if sections[5] != '0':
                     diff_of_hard = 7
                 else:
                     diff_of_hard = None
 
-                if sections[6] is not '0':
+                if sections[6] != '0':
                     diff_of_master = 10
                 else:
                     diff_of_master = None