Datetime from year and week number
<p>I have a year and a week number which I want to convert into a <code>datetime.datetiem</code> object. My (naive?) reading of the documentation hinted that <code>strptime('2016 00', '%Y %W')</code> should do just that. However:</p>

<pre><code>In [2]: from datetime import datetime

In [3]: datetime.strptime('2016 00', '%Y %W')
Out[3]: datetime(2016, 1, 1, 0, 0)

In [4]: datetime.strptime('2016 52', '%Y %W')
Out[4]: datetime(2016, 1, 1, 0, 0)
</code></pre>

<p>What am I doing wrong?</p>