【汽修帮手】数据采集，爬虫，根据pdf文件流合并pdf文件

# -*- coding:utf-8 -*-# @URL: d3d3LnF4YnNrLmNvbQ==import requestsdef rqu(length):    with open(f'test.pdf', 'ab+') as f:        r1 = length        r2 = r1 + 1048575        headers = {            "authority": "www.qxbsk.com",            "accept": "*/*",            "accept-language": "zh-CN,zh;q=0.9",            "cache-control": "no-cache",            "pragma": "no-cache",            "range": f"bytes={r1}-{r2}",            "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"        }        response = requests.get(url, headers=headers, cookies=cookies, params=params, stream=True)        response.encoding = 'utf-8'        f.write(response.content)def get_total_length(params):    response = requests.get(url, headers=headers, cookies=cookies, params=params, stream=True)    response.encoding = 'utf-8'    total_length = response.headers['Content-Length']    return total_lengthif __name__ == '__main__':    headers = {        "authority": "www.qxbsk.com",        "accept": "*/*",        "accept-language": "zh-CN,zh;q=0.9",        "cache-control": "no-cache",        "pragma": "no-cache",        "user-agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"    }    cookies = {        "security_session_verify": "",        "home_lang": "cn",        "admin_lang": "cn",        "PHPSESSID": ""    }    url = "https://www.qxbsk.com/home/test/uploadss"    params = {        "file": "OTc5MzQ0",        "__token__": ""    }    totalLength = get_total_length(params)    print(totalLength)    if int(totalLength)                                                 （）（）