擅长:python、mysql、java
<p>在Python3.3及更高版本中,<code>raise ... from None</code>可能用于这种情况。在</p>
<pre><code>try:
import someProprietaryModule
except ImportError:
raise ImportError('It appears that <someProprietaryModule> is not installed...') from None
</code></pre>
<p>这就达到了预期的效果。在</p>