title: How do I test for null list entry in python list
body: <p>I have a python list <code>[1,2,,4,5,6]</code>. What is the best method for testing for the missing, or <code>null</code>, list element? I am currently performing a <code>if element != ''</code> but I think there is a built-in test to perform such a thing, or am I wrong?</p>