You have opened a csv file with comma separated integer data. The opened file is intended to be read, and is being stored in the variable ET$.$

What is the code below doing with this information?

homes $=[]$

for e in ET:

e $=$ e$.$split$(",")$

sum $=0$

for t in range$(1,$len$($e$))$:

sum $+=$ int$($e$[$t$])$

e$[0]=$ sum

homes.append$($e$)$

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