'str' object is not callable using enumerate
<p>I'm trying to do the following:</p>

<pre><code>for index, image_properties in enumerate(list_of_properties):
    index = str(index)
</code></pre>

<p>But I keep getting </p>

<pre><code>TypeError at /
'str' object is not callable
</code></pre>

<p>What is going wrong here?</p>
