human
Solve the following python programming problem given the following code:
def __call__(self, func) : 
    self.func = func 
    @ wraps (func) 
    def _inner_func(* args, **kwargs) : 
        self._cached_func (* args, ** kwargs) 
return func 

    
    

    Fix the buggy line: return func
assistant
#Here is Python code to fix the buggy line: return func
.

return def _inner_func(