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Pablo Esteban Aguilar Castro
1,141 PointsTypeError: Can't convert int object into string object implictly
I'm using str() to the list, but it returns me this error.
# 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(my_list):
i = 0
for item in my_list:
i += item
return i
def summarize(my_list):
i = 0
for item in my_list:
i += item
return "The sum of {} is ".format(my_list) + i
1 Answer
Chris Freeman
Treehouse Moderator 68,423 PointsThe issue is with your last line:
return "The sum of {} is ".format(my_list) + i
"The sum of {} is ".format(my_list) creates a string, while i is an integer. To fix, wrap in a str():
return "The sum of {} is ".format(my_list) + str(i)
Actually, the challenge is asking you to utilize the add_list() function:
return "The sum of {} is ".format(my_list) + str(add_list())
But you can combine these in the format, which will cast the integer sum as a string for you:
return "The sum of {} is {}".format(my_list, add_list())