def metric(fn): def wrapper(*args, **kw): start = time.time() a=fn(*args, **kw) end = time.time() print('%s executed in %s ms' % (fn.__name__,end-start)) return a return wrapper
输出为:
fast executed in 0.0012867450714111328 ms slow executed in 0.12357020378112793 ms
import functools def log(unknow_arg): if type(unknow_arg)==str: def decorator(func): @functools.wraps(func) def wrapper(*args, **kw): print('%s %s():' % (unknow_arg, func.__name__)) print('begin call') a=func(*args, **kw) print('end call') return a return wrapper return decorator else: @functools.wraps(unknow_arg) def wrapper(*args, **kw): print('begin call') a=unknow_arg(*args, **kw) print('end call') return a return wrapper
输出分别为:
begin call end call execute f(): begin call end call
Sign in to make a reply
雨中的后皇嘉树
第一题
输出为:
第二题
输出分别为: