code simplification

Cython/Compiler/Optimize.py

@@ -314,12 +314,14 @@ class FlattenInListTransform(Visitor.VisitorTransform, SkipDeclarations):
         else:
             return node
 
-        if isinstance(node.operand2, ExprNodes.TupleNode) or isinstance(node.operand2, ExprNodes.ListNode):
+        if not isinstance(node.operand2, (ExprNodes.TupleNode, ExprNodes.ListNode)):
+            return node
+
         args = node.operand2.args
         if len(args) == 0:
             return ExprNodes.BoolNode(pos = node.pos, value = node.operator == 'not_in')
 
-            if node.operand1.is_simple():
+        if True or node.operand1.is_simple():
             lhs = node.operand1
         else:
             # FIXME: allocate temp for evaluated node.operand1
@@ -347,8 +349,6 @@ class FlattenInListTransform(Visitor.VisitorTransform, SkipDeclarations):
                                 operand2 = right)
 
         return reduce(concat, conds)
-        else:
-            return node
         
     def visit_Node(self, node):
         self.visitchildren(node)