从google cloud print API打印时设置纸张大小A4

import requests

# 创建打印任务
def create_print_job():
    url = "https://www.google.com/cloudprint/submit"
    headers = {
        "Authorization": "Bearer <access_token>",
        "Content-Type": "application/json"
    }
    data = {
        "printerid": "<printer_id>",
        "title": "My Print Job",
        "contentType": "url",
        "content": "https://example.com/myfile.pdf",
        "printTicket": {
            "version": "1.0",
            "print": {
                "pageSetup": {
                    "pageSize": {
                        "width_microns": 210000,
                        "height_microns": 297000
                    }
                }
            }
        }
    }

    response = requests.post(url, headers=headers, json=data)
    print(response.json())

# 调用创建打印任务函数
create_print_job()