Silent pylint warning here

Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/trans/formats.py

@@ -62,6 +62,7 @@ class StringIOMode(StringIO):
     StringIO with mode attribute to make ttkit happy.
     """
     def __init__(self, filename, data):
+        # pylint: disable=W0233
         StringIO.__init__(self, data)
         self.mode = 'r'
         self.name = filename