擅长:python、mysql、java
<p>使用<code>__import__</code>导入子模块时,必须将父包作为<code>fromlist</code>参数传递:</p>
<pre><code>>>> __import__("os.path")
<module 'os' from '/usr/lib/python2.6/os.pyc'>
>>> __import__("os.path", fromlist=["os"])
<module 'posixpath' from '/usr/lib/python2.6/posixpath.pyc'>
</code></pre>