如何从列表中删除一定数量的重复项

def remove_duplicates(lst, num_duplicates):
    seen = set()
    result = []
    duplicates_count = {item: 0 for item in lst}
    
    for item in lst:
        if item not in seen:
            seen.add(item)
            result.append(item)
        else:
            duplicates_count[item] += 1
            if duplicates_count[item] <= num_duplicates:
                result.append(item)
    
    return result

# 示例用法
original_list = [1, 2, 2, 3, 3, 3, 4, 4, 4, 4]
num_duplicates_to_remove = 1
result_list = remove_duplicates(original_list, num_duplicates_to_remove)
print(result_list)  # 输出: [1, 2, 3, 4, 3, 4, 4]