Python: Adding characters to strings error
<p>I am creating a pseudo random encryption program, and IDLE returns and error when I try to expand my seed value. The  code goes like this.</p>

<pre><code>for i in str(addon):
    seed = str(seed)
    seed.append(str(i))
    seed = int(seed)
</code></pre>

<p>When I run it, this happens.</p>

<pre><code>AttributeError: 'str' object has no attribute 'append'
</code></pre>

<p>Any ideas on how I can add characters onto the end of a string?</p>