# -*- coding: utf-8 -*-
#模拟有道翻译
import urllib
import urllib2

#通过抓包得到的url地址
url="http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule "
#完整的headers
headers={
    #"Host":"fanyi.youdao.com",
    "User-Agent":"Mozilla/5.0 (Windows NT 10.0; WOW64; rv:65.0) Gecko/20100101 Firefox/65.0",
    "Accept":"application/json, text/javascript, */*; q=0.01",
    "Accept-Language":"zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2",
    "Content-Type":"application/x-www-form-urlencoded; charset=UTF-8",
    "X-Requested-With":"XMLHttpRequest",
    #"Connection":"keep-alive"
}
#输入关键字 只能英译中 kkk~
key=raw_input("请输入需要翻译的文字：")
#发送到web服务器的表单数据
formdata={
    "type":"AUTO",
    "i":key,
    "doctype" :"json",
    "version" : "2.1",
    "keyfrom" : "fanyi.web",
    "ue":"UTF-8",
    "action" : "FY_BY_REALTIME",
    "typoResult" : "true"
}
#转码
data=urllib.urlencode(formdata)
#请求 Request()方法里有值请求为POST 没有则为GET
request=urllib2.Request(url,data=data ,headers=headers)
reponse=urllib2.urlopen(request)
print reponse.read()

但是这个方法只能英译中
其原因应该是"type":"EN2ZH_CN"代表英2中 这个type找不到哪里修改

代码曾遇到的问题
1.{"errorcode":50}
解决方法url="http://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule "将translate_o里的_o去掉变为url="http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule "即可
2.urllib2.HTTPError: HTTP Error 502: Bad Gateway
解决方法把传到数据单的typoResult标签置为true"typoResult" : "true"
所有有关网页的信息都是用fliddler抓包抓下来的分析了RAW WebForms，查看了JSON
运行结果

请输入需要翻译的文字：peace
                          {"type":"EN2ZH_CN","errorCode":0,"elapsedTime":0,"translateResult":[[{"src":"peace","tgt":"和平"}]]}