Python: unescape "\xXX"
<p>I have a string with <em>escaped data</em> like</p>

<pre><code>escaped_data = '\\x50\\x51'
print escaped_data # gives '\x50\x51'
</code></pre>

<p>What Python function would unescape it so I would get</p>

<pre><code>raw_data = unescape( escaped_data)
print raw_data # would print "PQ"
</code></pre>
