擅长:python、mysql、java
<p>这个</p>
<pre><code>j = ("http://xptracker.com/index.php?username=",usrname \
"&Submit=GO&comparename=&mode=regular")
</code></pre>
<p>很可能是:</p>
<pre><code>j = ("http://xptracker.com/index.php?username=" + usrname + \
"&Submit=GO&comparename=&mode=regular")
</code></pre>