leave harmless old visit functions

for backwards compatibility

Author: masonproffitt

qastle/transform.py

@@ -64,6 +64,15 @@ def visit_Name(self, node):
     def visit_Constant(self, node):
         return repr(node.value)
 
+    def visit_Num(self, node):
+        return repr(node.n)
+
+    def visit_Str(self, node):
+        return repr(node.s)
+
+    def visit_NameConstant(self, node):
+        return repr(node.value)
+
     @staticmethod
     def make_composite_node_string(node_type, *fields):
         return '(' + node_type + ''.join([' ' + field for field in fields]) + ')'