typo in Attack
@@ -24,7 +24,7 @@ class Attack:
if back == 'th' and sess is not None:
raise Exception("A session should not be provided when using th.")
if not hasattr(model, '__call__'):
- raise ValueError("model argument must be a function that returnsi "
+ raise ValueError("model argument must be a function that returns "
"the symbolic output when given an input tensor.")
# Prepare attributes
