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


Why is the following code wrong?

def add_list(list_x): sum(list_x)

When I try it in the shell it works fine; however, it appears to be wrong answer in the quiz.

# 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_x):

3 Answers

Seth Reece
Seth Reece
32,867 Points

You could also do it the long way as the challenge suggests:

def add_list(list):
  i = 0
  for item in list:
    i = i + item
  return i
Seth Reece
Seth Reece
32,867 Points

Hi Sclaudina,

Your function needs to return something when it is called. e.g.

function add_list(list):
    return sum(list)
Kenneth Love
Kenneth Love
Treehouse Guest Teacher

I think you mean def instead of function. Been doing JavaScript lately?

I tried as you indicates and also using print() like: def add_list(list_x): print(sum(list_x)) In both cases the answer to the quiz appears to be wrong. However, it works fine offline.

Thanks a lot for your kindness.