PYTHON list searching for value repetition
<p>I have a file with 8 columns and 100+ rows looks like:  </p>

<pre><code>PAIR 1MFK 1 URANIUM 82 HELIUM 112 3.6997  
PAIR 2JGH 2 PLUTONIUM 98 POTASSIUM 88 5.3003  
PAIR 345G 3 SODIUM 23 CARBON 14 1.664  
PAIR 4IG5 4 LITHIUM 82 ARGON 99 2.5506  
</code></pre>

<p>What I want to do is to compare the 5th column to find out repetition of any value and then generate an outfile containing the two full lines.</p>
