擅长:python、mysql、java
<p>如果您正在执行<code>from datetime import datetime</code>,则需要使用<code>datetime.utcnow()</code>,而不是<code>datetime.datetime.utcnow()</code>。我看不出你的第一个片段是如何工作的。</p>
<pre><code>>>> from datetime import datetime
>>> datetime.datetime.utcnow()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
AttributeError: type object 'datetime.datetime' has no attribute 'datetime'
>>> datetime.utcnow()
datetime.datetime(2011, 5, 3, 14, 10, 36, 30592)
</code></pre>