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Python Python Basics (Retired) Putting the "Fun" Back in "Function" Functions

Russell Holz
Russell Holz
4,811 Points

Code Challenge 2 of 2 help

I am obviously not understanding the way the question is asked, here's my code: def add_list(list): sum=0 for items in list: sum=sum+items return(sum)

def summarize(list): return("The sum of {} is {}".format(list, sum))

help please

functions.py
# add_list([1, 2, 3]) should return 6
# summarize([1, 2, 3]) should return "The sum of [1, 2, 3] is 6."
# Note: both functions will only take *one* argument each.

def add_list(list):
  sum=0
  for items in list:
    sum=sum+items
  return(sum)

def summarize(list):
  return("The sum of {} is {}".format(list, sum))

Looks like you almost had it. You should avoid using python keywords such as "list" for your variables and args. I've used test_list in place of list in your code.

for summarize you need to change to: return "The sum of {} is {}".format(test_list, add_list(test_list))

1 Answer

Hi Russell!

Just to expand on and clarify what Nathan has said:

You don't need a parenthesis around what you are returning, so you can just delete them and return the string with the .format() call attached.

Next, the second term of the .format() call needs to be a call to add_list(list), and not the variable sum; sum doesn't exist as far as the second function is concerned, it exists entirely within add_list(). Notice, however, that sending list to add_list() is going to return the sum of said list, which is why it serves your purposes there.

I hope this helps! Please mark this as the Best Answer if you found it most helpful.

Be Well, Graham