from numba import njit, prange
import numpy as np

@njit(parallel=True)
def add(A):
    s = 0
    # Without "parallel=True" in the jit-decorator
    # the prange statement is equivalent to range
    for i in prange(A.shape[0]):
        s += A[i]
    return s

abc = add(np.array([1, 2, 3]))

abc

6