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import datetime import time def test(day=datetime.datetime.now()): print day while True: test() time.sleep(1) run result： 2015-06-05 16:52:47.106000 2015-06-05 16:52:47.106000 2015-06-05 16:52:47.106000 2015-06-05 16:52:47.106000 2015-06-05 16:52:47.106000 2015-06-05 16:52:47.106000 2015-06-05 16:52:47.106000 2015-06-05 16:52:47.106000
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原文地址：http://www.cnblogs.com/i80386/p/4555057.html
