CODEWITHSUNDEEP
pythonlistpython-3.x
Joseph Petrus
Joseph Petrus

Reputation: 9

Summing List Elements

I'm trying to do this question for this online coding course I'm part of, and one of the questions requires me to add together integers in a list. I've tried to find the answer (and visited a few other pages on this site), but I can't think of anything. Help please!

Here's my code so far:

total = 0
att = input("RSVPs: ")
att = att.split(",")
for i in att:
  print(sum(iatt) for i in att)

enter image description here

Upvotes: 0

Views: 63

Answers (1)

Dimitris Fasarakis Hilliard
Dimitris Fasarakis Hilliard

Reputation: 160377

Your error is caused because you provide sum with an integer value (iatt = int(i)) when you should be providing it with the contents of the list which is split on ','.

You have a couple of options for this. Either provide a comprehension to sum and cast every element to an int inside the comprehension:

print(sum(int(i) for i in att))

or, use a built-in like map which pretty much does the same thing:

print(sum(map(int,att)))

in both cases, sum expects something that can be iterated through and it handles the summing.

Of course, you could manually loop over the contents of att, adding int(i) to total as you go:

for i in att:
    total += int(i)
print(total)

Upvotes: 6

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