python基本語法3.9-找到數組中兩數之和等於目標數對應的坐標

def two_sum(numbers, target):
    for i in range(len(numbers) - 1):
        for j in range(i + 1,len(numbers)):
            if (numbers[i] + numbers[j]) == target:
                return [i, j]
    return [-1, -1]

ret = two_sum([2,7,11,15],18)
print(type(ret))
print(two_sum([1,2,3,4], 5))