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--- a/abx/abxtestparams.py
+++ b/abx/abxtestparams.py
@@ -11,7 +11,8 @@
     return bytes.decode('utf-8', errors = 'replace')
 
 class ABXTestParams(object):
-    pnames = ['renderer', 'url', 'meta', 'seek', 'dursecs', 'line', 'spk', 'seqlen']
+    pnames = ['renderer', 'url', 'meta', 'seek', 'dursecs', 'line',
+              'spk', 'seqlen']
 
     def __init__(self, fn):
         self.fn = fn