Largest subarray sum

"""
Carlos A Delgado S
Suma más larga
"""

def index_largest_sum(a):
    n = len(a)

    ini = 0
    fin = 0
    maxi = float("-inf")
    for i in range(n):
        suma = 0
        for j in range(i,n):
            suma+=a[j]
            if suma>maxi:
                maxi = suma
                x = i
                y = j

    return x,y

print(index_largest_sum([-1,9,0,8,-5,6,-24]))