bugfix last commit

others_ops.py

@@ -25,8 +25,9 @@ class Prepend_scalar_constant_to_each_row(Op):
         return node
 
     def perform(self, node, (mat, ), (output, )):
+        new_shape=(mat.shape[0],mat.shape[1]+1)
         if output[0] == None:
-            output[0]=numpy.empty((mat.shape[0],mat.shape[1]+1),dtype=mat.dtype)
+            output[0]=numpy.empty(new_shape,dtype=mat.dtype)
             out=output[0]
         else:
             if output[0].shape!=new_shape: