Add all values in a CSV column in Python

Question

These seems like something very simple, but search as I might I just can\'t get past it.

I have a CSV file like this:

Day,Event,Value
1,\"Rent\",500
         


        

Answer 1

Given that 'value' is in column 2, you can perform the following simple for loop:

value_sum=0
for row in cr:
    value_sum += row[2]

Or, you can use a comprehension, if you understand it:

value_sum = sum([row[2] for row in cr])