将一个列表的列表项添加到同一索引下的另一个列表中

def add_lists_to_index(original_list):
    target_list = []
    
    for sublist in original_list:
        index = sublist[0]
        item = sublist[1]
        
        # Check if sublist with same index exists in target list
        sublist_exists = False
        for target_sublist in target_list:
            if target_sublist[0] == index:
                target_sublist.append(item)
                sublist_exists = True
                break
        
        # If sublist with same index doesn't exist, create a new sublist
        if not sublist_exists:
            target_list.append([index, item])
    
    return target_list