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# converting a list to a string

i can't convert a list to a string in a function

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.
sum_of_list = 0
for number in list1:
sum_of_list += number
return sum_of_list

def summarize(list1):

sum_of_list = 0
summary = 0
for number in list1:
sum_of_list += number

x_string = list1
summary = 'The sum of'+str(x_string)+'is'+sum_of_list
return summary
```

Hi! I think u need convert "sum_of_list" to string type. Like this:

```def summarize(list1):

sum_of_list = 0
summary = 0
for number in list1:
sum_of_list += number

x_string = list1
#sum_of_list is number type, need use str() function for string operation
summary = 'The sum of'+str(x_string)+' is '+str(sum_of_list)
return summary
```