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I was looking at the answer at following link https://stackoverflow.com/a/638069 but couldn't understand how does it perform 

sum(i for i, j in list_of_pairs)

I think it will only sum up the first value of the tuples in the 

list_of_pairs
HoldOffHunger
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Kapil
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    Note that the question is titled "How do I sum the first value in each tuple". So your analysis is likely correct. – Silvio Mayolo Jun 24 '19 at 23:55
  • Read about generator expressions and play around with the line to understand it. E. g. you can replace the "sum" by "list" to see which items are generated. – Michael Butscher Jun 25 '19 at 00:09

1 Answers1

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Yes, it only sums the first value of the tuples in the list.

Lee Garcon
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