Merge pull request #5313 from nouiz/python2_3

theano/gof/utils.py

@@ -161,7 +161,7 @@ class MetaObject(type):
         if props is not None:
             if not isinstance(props, tuple):
                 raise TypeError("__props__ has to be a tuple")
-            if not all(isinstance(p, str) for p in props):
+            if not all(isinstance(p, string_types) for p in props):
                 raise TypeError("elements of __props__ have to be strings")
 
             def _props(self):

theano/gradient.py

@@ -240,7 +240,7 @@ def Rop(f, wrt, eval_points):
             elif inp.owner is None:
                 try:
                     local_eval_points.append(inp.zeros_like())
-                except:
+                except Exception:
                     # None should be used for non-differentiable
                     # arguments, like for example random states
                     local_eval_points.append(None)