擅长:python、mysql、java
<p><a href="https://docs.python.org/3.5/library/datetime.html#datetime.datetime.strptime" rel="noreferrer">^{<cd1>}</a>方法支持每年的<em>天</em>格式:</p>
<pre><code>>>> import datetime
>>>
>>> datetime.datetime.strptime('16234', '%y%j').date()
datetime.date(2016, 8, 21)
</code></pre>
<p>然后可以使用<a href="https://docs.python.org/3.5/library/datetime.html#datetime.date.strftime" rel="noreferrer">^{<cd2>}</a>重新格式化日期</p>
<pre><code>>>> date = datetime.date(2016, 8, 21)
>>> date.strftime('%d/%m/%Y')
'21/08/2016'
</code></pre>