如何使用python从数组中有选择地减去一对索引

def find_indexes(arr, target):
    index_dict = {}
    for i, num in enumerate(arr):
        complement = target - num
        if complement in index_dict:
            return [index_dict[complement], i]
        index_dict[num] = i
    return []

# 示例用法
arr = [2, 7, 11, 15]
target = 9
indexes = find_indexes(arr, target)
print(indexes)  # 输出 [0, 1]