Python find duplicates array operations
<p>How can I form an array (c) composed of elements of b which are not in a?</p>

<pre><code>a=[1,2,"ID123","ID126","ID124","ID125"]
b=[1,"ID123","ID124","ID125","343434","fffgfgf"]
c= []
</code></pre>

<p>Can this be done without using a list comprehension?</p>
