Python 3.x compatibility.

theano/misc/strutil.py

@@ -14,7 +14,7 @@ def render_string(string, sub):
     """
     try:
         finalCode = string % sub
-    except Exception , E:
+    except Exception, E:
         # If unable to render the string, render longer and longer
         # initial substrings until we find the minimal initial substring
         # that causes an error

theano/tensor/nnet/ConvGrad3D.py

@@ -276,5 +276,5 @@ class ConvGrad3D(theano.Op):
 
 convGrad3D = ConvGrad3D()
 
-from Conv3D import conv3D
-from ConvTransp3D import convTransp3D
+from theano.tensor.nnet.Conv3D import conv3D
+from theano.tensor.nnet.ConvTransp3D import convTransp3D

theano/tensor/nnet/ConvTransp3D.py

@@ -426,5 +426,5 @@ def computeR(W, b, d, H, Rshape=None):
     return R
 
 
-from Conv3D import conv3D
-from ConvGrad3D import convGrad3D
+from theano.tensor.nnet.Conv3D import conv3D
+from theano.tensor.nnet.ConvGrad3D import convGrad3D