如何通过对序列号进行分组来创建id变量？

import re

# 假设有一个包含序列号的列表
serial_numbers = ["ABC001", "ABC002", "DEF001", "DEF002", "DEF003"]

# 定义分组规则，这里以序列号的前三个字符作为分组标识
grouping_pattern = r"(\w{3})"

# 创建一个字典来存储分组后的序列号和对应的id
grouped_serial_numbers = {}

# 遍历序列号列表
for serial_number in serial_numbers:
    # 提取分组标识
    group = re.search(grouping_pattern, serial_number).group(1)
    # 如果分组不存在，则创建新的id
    if group not in grouped_serial_numbers:
        grouped_serial_numbers[group] = {
            "id": generate_unique_id(),
            "serial_numbers": []
        }
    # 将序列号添加到对应的分组中
    grouped_serial_numbers[group]["serial_numbers"].append(serial_number)

# 输出分组后的结果
for group, data in grouped_serial_numbers.items():
    print("Group:", group)
    print("ID:", data["id"])
    print("Serial Numbers:", data["serial_numbers"])
    print()