如何从列表中删除重复的记录并用枚举标记它？

def remove_duplicates_with_enum(records):
    new_list = []
    enum_counter = 1

    for record in records:
        if record not in new_list:
            new_list.append(record)
            record['enum'] = enum_counter
            enum_counter += 1
        else:
            record['enum'] = new_list[new_list.index(record)]['enum']

    return new_list

# 示例数据
records = [
    {'id': 1, 'name': 'John'},
    {'id': 2, 'name': 'Jane'},
    {'id': 3, 'name': 'John'},
    {'id': 4, 'name': 'Mike'},
    {'id': 5, 'name': 'Jane'}
]

# 调用函数并打印结果
result = remove_duplicates_with_enum(records)
print(result)

[
    {'id': 1, 'name': 'John', 'enum': 1},
    {'id': 2, 'name': 'Jane', 'enum': 2},
    {'id': 3, 'name': 'John', 'enum': 1},
    {'id': 4, 'name': 'Mike', 'enum': 3}
]