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# challenge task 2 of 2

I did not understand this challenge need some help really appreciate it. MOD

Now, make a function named `summarize` that also takes a list. It should `return` the string `"The sum of X is Y."`, replacing `"X"` with the string version of the list and `"Y"` with the sum total of the list.

```# Now, make a function named `summarize` that also takes a list.
def summarize(lst):
# `"X"` with the string version of the list
X = str(lst)
# `"Y"` with the sum total of the list.
# use the `add_list` function from Task 1
# It should `return` the string `"The sum of X is Y."`, replacing `"X"`
# with the string version of the list and `"Y"` with the sum total of the list.
return "The sum of {X} is {Y}.".format(X=X, Y=Y)
```

This can be simplified to be:

```# Now, make a function named `summarize` that also takes a list.
def summarize(lst):
# It should `return` the string `"The sum of X is Y."`, replacing `"X"`
# with the string version of the list and `"Y"` with the sum total of the list.
return "The sum of {X} is {Y}.".format(X=lst, Y=add_list(lst))
```

or using the default `format` notation, the return can written as:

`return 'The sum of {} is {}.'.format(lst, add_list(lst))`

Thanks Chris