擅长:python、mysql、java
<p>只需修复缩进,将<code>else</code>更改为<code>elif</code>,并添加缺少的冒号:</p>
<pre><code>if index[y] == index[x]:
continue
elif index[y] != index[x]: # indentation and colon
indexdn = indexd
indadd = index[y] - index[x]
indexdn[:,y] = indexdn[:,y]+ indadd
index[y,:] = -indexdn[:,y]
indexdn[y,y] = 0
</code></pre>