patches python linecache ?

product/ERP5Type/patches/python.py

@@ -208,6 +208,7 @@ def patch_linecache():
               self.filename = filename
               self.body = body
             def get_source(self, name, *args, **kw):
+              assert self.filename == name
               return self.body
 
           assert '__loader___' not in module_globals