title: Why does this always answer 0 in modulo?
body: <p>why does this always print leap year, this is just a sample, not yet finished.</p>
  <pre><code>year = input()
  year = int()
  if year % 4 == 0:
   print (&quot;leap year&quot;)
  else :
   print (&quot;not leap year&quot;)
  </code></pre>