title: Shoe size converter function
body: <p>I am trying to make a shoe size converter function. But this program prints weird things like:</p>
  
  <pre><code>"You need function shoe_size at 0x030236F0&gt; sized shoes"
  </code></pre>
  
  <p>What do I have to do? Here is my code:</p>
  
  <pre><code> def shoe_size(foot_size):
      shoe_size = (foot_size + 1,5) * 3 / 2
      return shoe_size
  
  foot_size = (input("Enter your foot size: "))
  
  print ("You need " + str(shoe_size) + " sized shoes")
  </code></pre>