strange result when removing item from a list
<p>I've got this piece of code :</p>

<pre><code>numbers = range(1,50)

for i in numbers :
    if i &lt; 20 :

        print "do something" 
        numbers.remove(i)

print numbers
</code></pre>

<p>but the result I`m getting is : </p>

<blockquote>
  <p>[2, 4, 6, 8, 10, 12, 14, 16, 18, 20,
  21, 22, 23, 24, 25, 26, 27, 28, 29,
  30, 31, 32, 33, 34, 35, 36, 37, 38,
  39, 40, 41, 42, 43, 44, 45, 46, 47,
  48, 49]</p>
</blockquote>

<p>of course I'm expecting the numbers below 20 to not appear in the results, I'm assuming I`m doing something wrong with the remove</p>
