What's the purpose of the + (pos) unary operator in Python?
<p>Generally speaking, what should the unary <code>+</code> do in Python?</p>

<p>I'm asking because, so far, I have never seen a situation like this:</p>

<pre><code>+obj != obj
</code></pre>

<p>Where <code>obj</code> is a generic object implementing <code>__pos__()</code>.</p>

<p>So I'm wondering: why do <code>+</code> and <code>__pos__()</code> exist? Can you provide a real-world example where the expression above evaluates to <code>True</code>?</p>
