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Start your free trialTristan Gaebler
6,204 PointsCould someone point me in the right direction...
I'm an task 1/2. I can make a function, but forgot how to ass lists. Could someone nudge me in the right direction.
# 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([]):
1 Answer
Chris Freeman
Treehouse Moderator 68,427 Points- Add together list items using built-in function
result = sum( list )
2.Loop over items and add them to subtotal:
result = 0
for item in list:
result += item
You will also need to have an argument in your function: def add_list(arg):
Combining all of this, you would have something like this:
def add_list(arg):
result = sum(arg)
return result
or combining the last two statements:
def add_list(arg):
return sum(arg)
Tristan Gaebler
6,204 PointsTristan Gaebler
6,204 PointsIt's not really working. I don't think I fully get what your saying.
Chris Freeman
Treehouse Moderator 68,427 PointsChris Freeman
Treehouse Moderator 68,427 PointsI've expanded my anwser to combine all the bits.
Tristan Gaebler
6,204 PointsTristan Gaebler
6,204 PointsThat really helped, thanks! Could you take a look at the second challenge. Here's my code. What arguments do I pass to .format
''
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(arg): return sum(arg)
def summarize(arg2): return "The sum of {} is {}".format
Chris Freeman
Treehouse Moderator 68,427 PointsChris Freeman
Treehouse Moderator 68,427 PointsThe first argument would be the
arg2
. The second argument would be the sum which can be written asadd_list(arg2)
. Putting those together you get:Tristan Gaebler
6,204 PointsTristan Gaebler
6,204 PointsThanks for the help!!!!!!!