Python爬虫实现有道翻译

import time
import random
from **** import post #封装的函数请看上个作品
import json


def md5_my(need_str):
    import hashlib
    # 创建对象
    md5_o = hashlib.md5()
    # 转换成bytes
    sign_bytes = need_str.encode('utf-8')
    # 更新md5 object值
    md5_o.update(sign_bytes)
    sign_str = md5_o.hexdigest()
    return sign_str

def translate(m):
    url = 'http://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule'

    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": " 214",
        "Content-Type": " application/x-www-form-urlencoded; charset=UTF-8",
        "Cookie": " OUTFOX_SEARCH_USER_ID=-41440579@59.111.179.144; JSESSIONID=aaa8WCfsKf4OI44Ely3uw; OUTFOX_SEARCH_USER_ID_NCOO=2072695089.4406793; ___rl__test__cookies=1534257729611",
        "Host": " fanyi.youdao.com",
        "Origin": " http://fanyi.youdao.com",
        "Referer": " http://fanyi.youdao.com/",
        "User-Agent": " Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.170 Safari/537.36",
        "X-Requested-With": " XMLHttpRequest",
    }


    n = m
    # salt = "" + ((new Date).getTime() + parseInt(10 * Math.random(), 10))
    # o = u.md5(S + n + r + D)
    salt = int(time.time()*1000 + random.randint(0,10))
    salt_str = str(salt)
    S = "fanyideskweb"
    D = "ebSeFb%=XZ%T[KZ)c(sy!"
    sign_str = S + n + salt_str + D
    sign_md5_str = md5_my(sign_str)

    form = {
        "i": n,
        "from": "AUTO",
        "to": "AUTO",
        "smartresult": "dict",
        "client": "fanyideskweb",
        "salt": salt_str,
        "sign": sign_md5_str,
        "doctype": "json",
        "version": "2.1",
        "keyfrom": "fanyi.web",
        "action": "FY_BY_REALTIME",
        "typoResult": "false",
    }

    html_bytes = post(url, form, headers=headers)
    # print(html_bytes)
    res_dict = json.loads(html_bytes.decode('utf-8'))
    print(res_dict)
    translate_res = res_dict['translateResult'][0][0]['tgt']
    # print(translate_res)
    return translate_res

if __name__ == '__main__':
    he = translate(input('请输入翻译内容：'))
    print('翻译结果为:' + he)