python爬取有道翻译接口

#爬取有道翻译接口
def youdao(word):
    import hashlib
    import requests
    import time
    import random
    import re

    appVersion = '5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36'
    #浏览器调试后发现ts是时间戳
    ts = str(int(time.time()*1000))
    #bv是请求头里面浏览器的信息经过MD5加密
    bv = hashlib.md5(appVersion.encode('utf-8')).hexdigest()
    #salt是时间戳后面随机加一位数字[0,9]
    salt = ts + str(random.randint(0,9))
    sign_str = "fanyideskweb" + word + salt + "@6f#X3=cCuncYssPsuRUE"
    #sign是上面这个字符串MD5后的结果
    sign = hashlib.md5(sign_str.encode('utf-8')).hexdigest()
    # print(ts)
    # print(bv)
    # print(salt)

    #request请求地址
    url = 'http://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule'
    #请求头
    headers = {
    "Accept":"application/json, text/javascript, */*; q=0.01",
    "Accept-Encoding":"gzip, deflate",
    "Accept-Language":"zh-CN,zh;q=0.9",
    "Connection":"keep-alive",
    "Content-Length":"258",
    "Content-Type":"application/x-www-form-urlencoded; charset=UTF-8",
    "Cookie":"[email protected]; JSESSIONID=aaa2xaVAnC78n4KVSHwUw; OUTFOX_SEARCH_USER_ID_NCOO=280669685.8154466; ___rl__test__cookies=1561601226382",
    "Host":"fanyi.youdao.com",
    "Origin":"http://fanyi.youdao.com",
    "Referer":"http://fanyi.youdao.com/",
    "User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Safari/537.36",
    "X-Requested-With":"XMLHttpRequest"
    }
    #请求数据，json字符串，其中salt，sign，ts,bv的值每次请求都会变
    data = {
    "i":word,
    "from":"AUTO",
    "to":"AUTO",
    "smartresult":"dict",
    "client":"fanyideskweb",
    "salt":salt,
    "sign":sign,
    "ts":ts,
    "bv":bv,
    "doctype":"json",
    "version":"2.1",
    "keyfrom":"fanyi.web",
    "action":"FY_BY_CLICKBUTTION"
    }

    response = requests.post(url, data=data, headers=headers)
    ret = response.text
    #正则匹配到需要的翻译结果
    retRegex = re.compile(r'"translateResult":(.*),"errorCode".*')
    translateResult = retRegex.search(ret).group(1)
    return translateResult

while True:
    word = input("请输入你需要翻译的词汇（回车退出）：")
    if word == '':
        break
    else:
        print(youdao(word))