擅长:python、mysql、java
<pre class="lang-python prettyprint-override"><code>try:
try:
int('a')
except ValueError as e:
raise ValueError('There is a problem: {0}'.format(e))
except ValueError as err:
print err
</code></pre>
<p>印刷品:</p>
<pre class="lang-none prettyprint-override"><code>There is a problem: invalid literal for int() with base 10: 'a'
</code></pre>