擅长:python、mysql、java
<p>你给了<code>except</code>一个<code>IndexError</code>的实例。请改为:</p>
<pre><code>try:
modrad, thetas = trim_rad(rad)
except IndexError:
print "Couldn't find main chunk"
return 0
</code></pre>
<p>下面是一个例子:</p>
<pre><code>>>> try:
... [1][1]
... except IndexError('no'):
... pass
...
Traceback (most recent call last):
File "<stdin>", line 2, in <module>
IndexError: list index out of range
>>> try:
... [1][1]
... except IndexError:
... pass
...
>>>
</code></pre>