python - Sum of the integers from 1 to n

Question

I'm trying to write a program to add up number from 1 to n. I've managed to get it to print the numbers several times but not add them all. It keeps on just adding two of the numbers.

My 1st attempt is:

def problem1_3(n):
    my_sum = 0
    # replace this pass (a do-nothing) statement with your code
    while my_sum <= n:
        my_sum = my_sum + (my_sum + 1)
    print() 
    print(my_sum)

How can I fix this problem?

Answer 1

You can do it with one line, where you create a list of integers from 0 to n and sums all the elements with sum function

def problem1_3(n):
    return sum(range(n+1))