title: python coding of user input of hex numerals
body: <p>How do I get the A to F hex numerals in as user input via something like:</p>
  
  <p><code>hexnum=raw_input("input your hex number -&gt; ")</code></p>
  
  <p>Then I have a problem with such input not being convertible via:</p>
  
  <p><code>number=int(hexnum)</code></p>
  
  <p>I am looking for a simple example with a basic explanation.</p>