code simplification

theano/scan_module/scan_utils.py

@@ -416,8 +416,6 @@ def equal_computations(xs, ys, in_xs=None, in_ys=None):
         return False
     common = set(zip(in_xs, in_ys))
     n_nodes = len(nds_x)
-    cont = True
-    idx = 0
     for dx, dy in izip(xs, ys):
         if not dx.owner or not dy.owner:
             if dy.owner or dx.owner:
@@ -431,15 +429,16 @@ def equal_computations(xs, ys, in_xs=None, in_ys=None):
             elif (dx, dy) not in common and dx != dy:
                 return False
 
-    while cont and idx < n_nodes:
+    idx = 0
+    while idx < n_nodes:
         nd_x = nds_x[idx]
         nd_y = nds_y[idx]
         if nd_x.op != nd_y.op:
-            cont = False
+            return False
         elif len(nd_x.inputs) != len(nd_y.inputs):
-            cont = False
+            return False
         elif len(nd_x.outputs) != len(nd_y.outputs):
-            cont = False
+            return False
         else:
             for dx, dy in izip(nd_x.inputs, nd_y.inputs):
                 if (dx, dy) not in common:
@@ -451,14 +450,13 @@ def equal_computations(xs, ys, in_xs=None, in_ys=None):
                             else:
                                 pass
                         else:
-                            cont = False
+                            return False
 
-        if cont:
             for dx, dy in izip(nd_x.outputs, nd_y.outputs):
                 common.add((dx, dy))
         idx += 1
 
-    return cont
+    return True
 
 
 def infer_shape(outs, inputs, input_shapes):