what is the sum of the list elements as out put of this code:- list = ["one","two", "three","four", "ten"]

Question

About understaning the same action taken by using pop() and list[:-1] at the same time.

list = ["one","two", "three","four", "ten"]
list.pop()
print(list[:-1])

# The answer is 3

Answer 1

list = ["one","two", "three","four", "ten"]

list.pop() // it removes ''ten''

print(list[:-1]) // this will fetch values from index 0 upto -1(last index which is excluded). So you will only have ["one","two", "three"] as output.

Answer 2

I don't understand your question but list.pop() removes the last element in list
And then we are left with ["one","two","three","four"]

And list[:-1]

means start from 0 element and stop before -1(last element)

so we are left with ["one","two","three"] after slicing( [list[:-1] }) is performed

Answer 3

That is list[::-1] is reversing the elements for you but list[:-1] excludes the last item...similar to pop()

Answer 4

Az.A. No, -1 is the index of the last element in a list. Similarly -2 is the second last element in the list and so on.