CSV file write and read using python
<p>I have a csv named temp.csv where 3 columns</p>

<pre><code>Name    Iteration     Value //this temp.csv file
module1   1             10
module2   2             20
module3   3             30
module4   4             40
module1   5             50
module2   6             60
module3   7             70
module4   8             80
module1   9             90
</code></pre>

<p>now i want a new csv named accumuated.csv like</p>

<pre><code>Name    Iteration     Value
module1   1,5,9        150 i.e. 10+50+90
module2   2,6          80 i.e. 20+60
modul13   3,7          100 i.e.  30+70
module4   4,8          120 i.e. 40+80
</code></pre>
