python 计算函数执行时间装饰器(装饰器写法)

import time import functools def clock(func): @functools.wraps(func) def clocked(*args, *kwargs): t0 = time.time() result = func(args, **kwargs) elapsed = time.time() - t0 name = func.name arg_lst = [] if args: arg_lst.append(', '.join(repr(arg) for arg in args)) if kwargs: pairs = ['%s=%r' % (k, w) for k, w in sorted(kwargs.items())] arg_lst.append(', '.join(pairs)) arg_str = ', '.join(arg_lst) print('[%0.8fs] %s(%s) -> %r ' % (elapsed, name, arg_str, result)) return result return clocked

@clock def test(): sum=0 for i in range(1000): sum+=i print(sum)

test()

property,classmethod,staticmethod