Sebastian Wiesner avatar Sebastian Wiesner committed edc5357

Improved error message

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Files changed (1)


 def _slice(value):
     parts = [int(v.strip()) for v in value.split(',')]
     if len(parts) > 2:
-        raise ValueError('Need excatly two arguments')
+        raise ValueError('too many slice parts')
     return (parts + [None]*2)[:2]
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