PEP8

theano/tests/test_breakpoint.py

@@ -47,9 +47,14 @@ class TestPdbBreakpoint:
 
         grads = [T.grad(self.monitored_input1.sum(), self.input1),
                  T.grad(self.monitored_input2.sum(), self.input2)]
-        fct = theano.function([self.input1, self.input2], grads)
 
-        gradients = fct(input1_value, input2_value)
+        # Add self.monitored_input1 as an output to the Theano function to
+        # prevent Theano from optimizing the PdbBreakpoint op out of the
+        # function graph
+        fct = theano.function([self.input1, self.input2],
+                              grads + [self.monitored_input1])
+
+        gradients = fct(input1_value, input2_value)[:-1]
 
         expected_gradients = [numpy.ones((3, 3), dtype="float32"),
                               numpy.array(1., dtype="float32")]