Removed comparisons with None

theano/compile/function_module.py

@@ -1069,7 +1069,7 @@ class FunctionMaker(object):
                             if hasattr(remove, 'fgraph'):
                                 del remove.fgraph
                             if hasattr(remove, 'owner'):
-                                if remove.owner == None:
+                                if remove.owner is None:
                                     pass
                                 else:
                                     if hasattr(remove.owner, 'fgraph'):

theano/compile/tests/test_function_module.py

@@ -28,7 +28,7 @@ def checkfor(testcase, fn, E):
             # we got the exception we wanted
             return
         else:
-            # we did not get the exception we wanted
+            # we did not getishe exception we wanted
             raise
     # fn worked, but it shouldn't have
     testcase.fail()

theano/sparse/basic.py

@@ -1627,7 +1627,7 @@ class SpSum(gof.op.Op):
         return gof.Apply(self, [x], [z])
 
     def perform(self, node, (x,), (z,)):
-        if self.axis == None:
+        if self.axis is None:
             z[0] = numpy.asarray(x.sum())
         else:
             z[0] = numpy.asarray(x.sum(self.axis)).ravel()

theano/tensor/nlinalg.py

@@ -670,7 +670,7 @@ def norm(x,ord):
     if ndim == 0:
         raise ValueError("'axis' entry is out of bounds.")
     elif ndim == 1:
-        if ord == None:
+        if ord is None:
             return tensor.sum(x**2)**0.5
         elif ord == 'inf':
             return tensor.max(abs(x))
@@ -685,7 +685,7 @@ def norm(x,ord):
                 raise ValueError("Invalid norm order for vectors.")
             return z
     elif ndim == 2:
-        if ord == None or ord == 'fro':
+        if ord is None or ord == 'fro':
             return tensor.sum(abs(x**2))**(0.5)
         elif ord == 'inf':
             return tensor.max(tensor.sum(abs(x), 1))