在Python中查找重复项的索引

def find_duplicate_indexes(lst):
    index_dict = {}
    for i, element in enumerate(lst):
        if element in index_dict:
            index_dict[element].append(i)
        else:
            index_dict[element] = [i]
    
    duplicate_indexes = [indexes for indexes in index_dict.values() if len(indexes) > 1]
    return duplicate_indexes

# 示例用法
my_list = [1, 2, 3, 4, 5, 2, 6, 3, 7, 8, 5]
duplicate_indexes = find_duplicate_indexes(my_list)
print(duplicate_indexes)