title: Python remove all numbers from a list
body: <p>I have a list of unicode elements and I'm trying to remove all integer numbers from It. 
  My code is:</p>
  
  <pre><code>List = [u'123', u'hello', u'zara', u'45.3', u'pluto']
  
  for el in List:
     if isinistance(el, int):
        List.remove(el)
  </code></pre>
  
  <p>The code doesn't work, It give me the same list with u'123' include.
  What i need is this:</p>
  
  <pre><code>List = [ u'hello', u'zara', u'45.3', u'pluto']
  </code></pre>
  
  <p>Can somebody hel me?</p>