code: def unmangle_code_names(self, co, classname):
          
          if classname:
              classname = '_' + classname.lstrip('_') + '__'
  
              free = [ self.unmangle_name(name, classname)
                       for name in (co.co_cellvars + co.co_freevars) ]
              names = [ self.unmangle_name(name, classname)
                        for name in co.co_names ]
              varnames = [ self.unmangle_name(name, classname)
                           for name in co.co_varnames ]
          else:
              free = co.co_cellvars + co.co_freevars
              names = co.co_names
              varnames = co.co_varnames
          return free, names, varnames
docs: Remove __ from the end of _name_ if it starts with __classname__
          return the "unmangled" name.