improve code readability

Cython/Compiler/ExprNodes.py

@@ -6546,21 +6546,20 @@ class TupleNode(SequenceNode):
             self.is_temp = False
             self.is_literal = True
             return self
-        else:
+
         if not skip_children:
             self.args = [arg.analyse_types(env) for arg in self.args]
-            if not self.mult_factor and not any(arg.type.is_pyobject or arg.type.is_fused for arg in self.args):
+        if not self.mult_factor and not any((arg.type.is_pyobject or arg.type.is_fused) for arg in self.args):
             self.type = env.declare_tuple_type(self.pos, (arg.type for arg in self.args)).type
             self.is_temp = 1
             return self
-            else:
+
         node = SequenceNode.analyse_types(self, env, skip_children=True)
-                for child in node.args:
-                    if not child.is_literal:
-                        break
-                else:
-                    if not node.mult_factor or node.mult_factor.is_literal and \
-                           isinstance(node.mult_factor.constant_result, (int, long)):
+        if not all(child.is_literal for child in node.args):
+            return node
+
+        if not node.mult_factor or (
+                node.mult_factor.is_literal and isinstance(node.mult_factor.constant_result, (int, long))):
             node.is_temp = False
             node.is_literal = True
         else: