a(*{'q':'qqq'}),why only print key
<pre><code>def a(*x):
    print x

a({'q':'qqq'})
a(*{'q':'qqq'})#why only print key.
</code></pre>

<p>traceback:</p>

<pre><code>({'q': 'qqq'},)
('q',)
</code></pre>

<p>thanks</p>
