Change assertion exceptio to TypeError

Author: Albert Alonso

bayes_opt/bayesian_optimization.py

@@ -126,8 +126,8 @@ def __init__(self, f, pbounds, random_state=None, verbose=2,
             try:
                 self._bounds_transformer.initialize(self._space)
             except (AttributeError, TypeError):
-                raise AssertionError('The transformer must be instance of'
-                                     'DomainTransformer')
+                raise TypeError('The transformer must be an instance of '
+                                'DomainTransformer')
 
         super(BayesianOptimization, self).__init__(events=DEFAULT_EVENTS)
 

tests/test_bayesian_optimization.py

@@ -293,7 +293,7 @@ def reset(self):
 
 
 def test_define_wrong_transformer():
-    with pytest.raises(AssertionError):
+    with pytest.raises(TypeError):
         optimizer = BayesianOptimization(target_func, PBOUNDS,
                                          random_state=np.random.RandomState(1),
                                          bounds_transformer=3)