Get multiples of 10 and add the number

Question

Guys i want to round the given numbers to the nearest multiple of 10. e.g. 15 should be rounded to 20 whereas 14 should be rounded to 10. After rounding the numbers, i want to find their sum.

Sample input is like (a list): [2, 18, 10]

Sample output: 30

Sample 2:

[10, 20, 1, 1]

Output : 30

Answer 1

Using NumPy:

import numpy as np

numbers = [1,10,20,1]
np.around(numbers, decimals=-1).sum()

gives 30.