Convert simple php code to python
<p>I want to convert my php code to python code. Is it possible </p>

<pre><code>$secret = 'segredo'; // To make the hash more difficult to reproduce.
$path   = '/p/files/top_secret.pdf'; // This is the file to send to the user.
$expire = 1096891200; // At which point in time the file should expire. time() + x; would be the usual usage.
$md5 = base64_encode(md5($secret . $path . $expire, true)); // Using binary hashing.`$md5 = strtr($md5, '+/', '-_'); // + and / are considered special characters in URLs, see the wikipedia page linked in references.
$md5 = str_replace('=', '', $md5); // When used in query parameters the base64 padding character is considered special.
</code></pre>

<p>I want to convert above php code to python. Is there exist some tool for conversion ?</p>

<p>This code is simple unique url generator for nginx HttpSecureLinkModule.</p>
