L1 Vector Norm

Problem

Compute the L1 (Manhattan) norm of a vector v: the sum of the absolute values of its components.

||v||_1 = sum(|v[i]|).

Hint

Use the built-in abs and sum.

case 1

in: [[3,-4]]

expected: 7

case 2

in: [[1,2,3]]

expected: 6

case 3

in: [[0,0,0]]

expected: 0

case 4

in: [[-1.5,2.5,-3]]

expected: 7

Starter codePython

def l1_norm(v):
    # Your code here
    pass

4 test cases · run your code against them in the editor