shithub: aubio

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python/lib/aubio/cmd.py: improve error message

--- a/python/lib/aubio/cmd.py

+++ b/python/lib/aubio/cmd.py

@@ -187,7 +187,7 @@

     elif mode == 'samples':

         return samples2samples

     else:

-        raise ValueError('invalid time format %s' % mode)

+        raise ValueError("invalid time format '%s'" % mode)

 # definition of processing classes