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_list = [] def add_list(num): _list.append(num) return(sum(num))

def summarize(num):

return ("The sum of {} is {}.".format(_list,(sum(num))))

and the return is like this : The sum of [[1,2,3]] is 6.

How do I fixed to get only [1,2,3]

functions.py
```# add_list([1, 2, 3]) should return 6
# summarize([1, 2, 3]) should return
# Note: both functions will only take *one* argument each.
_list = []
_list.append(num)
return(sum(num))

def summarize(num):

return ("The sum of {} is {}.".format(_list,(sum(num))))
``` Hi Eric, The only change required is in function summarize(), such that it prints out the input parameter, num, as shown below.

```# add_list([1, 2, 3]) should return 6
# summarize([1, 2, 3]) should return
# Note: both functions will only take *one* argument each.
_list = []