sum

To compute a sum we can use the + operator and add values together. Yet, it would be excessively difficult to do that for large lists (imagine if there are 100 values).
Python has a built-in function sum which given a list computes the sum of its elements.
l = [1, 2, -2, 5, 10, -1]
print(l[0] + l[1] + l[2] + l[3] + l[4] + l[5])   # 15
print(sum(l))                                    # 15

Challenge

Having 8 floating-point numbers in the input, your task is to print the sum of 8, then the sum of the first 7 elements, then the sum of the first 6, the sum of 5, 4, ..., up to one element.
Input
1
2
3
4
5
6
7
8

Output
36
28
21
15
10
6
3
1
Tip 1
You can use del to remove the last element after each sum calculation
Tip 2
You can use slices + sum
 
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