json.dumps打乱了订单

import json
from collections import OrderedDict

# 使用 OrderedDict 来保持顺序
data = OrderedDict([
    ('order_id', 12345),
    ('customer_name', 'John Doe'),
    ('items', [
        {'item_id': 1, 'quantity': 2},
        {'item_id': 2, 'quantity': 1}
    ])
])

# 转换为 JSON 字符串
json_str = json.dumps(data, indent=4)
print(json_str)

{
    "order_id": 12345,
    "customer_name": "John Doe",
    "items": [
        {
            "item_id": 1,
            "quantity": 2
        },
        {
            "item_id": 2,
            "quantity": 1
        }
    ]
}