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作业8

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孤o赦免你

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def metric(fn):

    @functools.wraps(fn)

    def wrapper(*args, **kw):

        t = time.time()

        fc = fn(*args, **kw)

        tt = int((time.time() - t) * 1000)

        print('%s run time %s  ms' % (fn.__name__, tt))

        return fc

    return wrapper


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