Error converting miles to kilometers
<p>I'm trying to learn python and am attempting to create a simple formula that converts miles to kilometers and returns some text with the conversion.</p>

<p>Here's what I have:</p>

<pre><code>def mile(x):
    z = x * 1.609344
    print "%.2f" % z

x = float(raw_input("How many miles are you traveling? "))  

z = mile(x)

print "That's about % kilometers." % z
</code></pre>

<p>Can someone explain why this doesn't work? I could definitely set up the mile function to print a sentence with the conversion, but I didn't want to do that. </p>
