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Python Python Basics (Retired) Putting the "Fun" Back in "Function" Functions

Challange Task 2 of 2 in Python Basics -Functions

Can someone explain what is wrong with my code?

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.
def add_list(list):
  sum = 0
  for x in list:
    sum = sum + x
  return sum 

def summarize(list):
  string_version = " ".join(list)
  return "The sum of {} is {}".format(string_version,add_list([1,2,3]))

1 Answer

Hi Tal

The summarize function should return the string "The sum of [1, 2, 3] is 6.", where [1,2,3] is the list passed in to your summarize function and 6 is the result of calling the add_list function passing in the same list. In your code you passed in a pre defined list to the add_list function, causing logic to fall over, Say i passed [1,2,3,4] in to the summarize function and using your logic it would return "The sum of [1, 2, 3,4] is 6", this is because of your pre defined list of [1,2,3] passed in to add_list."

so pass in the same list to the add_list function as you do the summarize function

# 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(list):
  sum = 0
  for x in list:
    sum = sum + x
  return sum 

def summarize(list):
  string_version = " ".join(list)
  return "The sum of {} is {}".format(string_version,add_list(list))

hope this helps

Hi Andreas , Thanks for helping me