import time; def metric(fn): def wapper(*args, **kw): start = time.time() ret = fn(*args, **kw); end = time.time() print('%s executed in %s ms' % (fn.__name__, (end - start))) return ret return wapper
什么意思可以解释一下么!根本看不明白,我硬着头皮理解也没弄明白怎么回事啊!
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可导的非连续函数