--- a/Utilities/binplistlib.py Mon Mar 12 19:57:16 2018 +0100 +++ b/Utilities/binplistlib.py Tue Mar 13 14:54:46 2018 +0100 @@ -997,7 +997,7 @@ all_positions = [] writtenReferences = list(self.writtenReferences.items()) writtenReferences.sort(key=lambda x: x[1]) - for obj, order in writtenReferences: + for obj, _order in writtenReferences: position = self.referencePositions.get(obj) if position is None: raise InvalidPlistException(