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# Adding a list - python

How would I add all the numbers in a list, within a function

functions.py
```# add_list([1, 2, 3]) should return 6
def add_list(lists):
for numb in lists:
numb[0] + numb[1] + numb[2]
# summarize([1, 2, 3]) should return "The sum of [1, 2, 3] is 6."
# Note: both functions will only take *one* argument each.
```

## 1 Answer

MOD

Hi Michael, you're very close. This missing part is to accumulate the total as the `for` loop runs:

```def add_list(lists):
# initialize total to 0
total = 0
for numb in lists:
# Add numb to total
total += numb
# Remember to return a value from the function
return total
```

Reminder: `total += numb` is equivalent to `total = total + numb`