缓存装饰器的练习

datetime inspect inspect signatureParameter (fn):     local_cache={}     (*agrs**kwargs):         clear_list= []         k(_stamp) local_cache.items():  star = datetime.datetime.now().timestamp()         star - stamp >:                 clear_list.append(k)         k clear_list: local_cache.pop(k)         paramers_dict = {} sig = inspect.signature(fn)         parameters = sig._parameters params_name = [key key parameters.keys()]         ivalues (agrs):             k = params_name[i]             paramers_dict[k] = values     kv kwargs.items():             paramers_dict[k] = v     kv parameters.items():             k parameters.keys():                 parameters[k]= v.default     new_paramers_dict = ((parameters)) new_paramers_dict  local_cache.keys(): local_cache[new_paramers_dict] = (fn(*agrs**kwargs)datetime.datetime.now().timestamp()) local_cache[new_paramers_dict] wrapper time (x=y=):time.sleep()     x+y (add()) () (add())