不需要注册百度翻译平台，利用获取界面js，得知百度翻译中sign的加密规则
直接上源码
import execjsimport requestsimport reJS_CODE = """function a(r, o) {for (var t = 0; t < o.length - 2; t += 3) {var a = o.charAt(t + 2);a = a >= "a" ? a.charCodeAt(0) - 87 : Number(a),a = "+" === o.charAt(t + 1) ? r >>> a: r << a,r = "+" === o.charAt(t) ? r + a & 4294967295 : r ^ a}return r}var C = null;var token = function(r, _gtk) {var o = r.length;o > 30 && (r = "" + r.substr(0, 10) + r.substr(Math.floor(o / 2) - 5, 10) + r.substring(r.length, r.length - 10));var t = void 0,t = null !== C ? C: (C = _gtk || "") || "";for (var e = t.split("."), h = Number(e[0]) || 0, i = Number(e[1]) || 0, d = [], f = 0, g = 0; g < r.length; g++) {var m = r.charCodeAt(g);128 > m ? d[f++] = m: (2048 > m ? d[f++] = m >> 6 | 192 : (55296 === (64512 & m) && g + 1 < r.length && 56320 === (64512 & r.charCodeAt(g + 1)) ? (m = 65536 + ((1023 & m) << 10) + (1023 & r.charCodeAt(++g)), d[f++] = m >> 18 | 240, d[f++] = m >> 12 & 63 | 128) : d[f++] = m >> 12 | 224, d[f++] = m >> 6 & 63 | 128), d[f++] = 63 & m | 128)}for (var S = h,u = "+-a^+6",l = "+-3^+b+-f",s = 0; s < d.length; s++) S += d[s],S = a(S, u);return S = a(S, l),S ^= i,0 > S && (S = (2147483647 & S) + 2147483648),S %= 1e6,S.toString() + "." + (S ^ h)}"""class Dict:def __init__(self):self.sess = requests.Session()self.headers = {'User-Agent':'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36'}self.token = Noneself.gtk = None# 获得token和gtk# 必须要加载两次保证token是最新的，否则会出现998的错误self.loadMainPage()self.loadMainPage()def loadMainPage(self):"""load main page : /and get token, gtk"""url = ''try:r = self.sess.get(url, headers=self.headers)self.token = re.findall(r"token: '(.*?)',", r.text)[0]self.gtk = re.findall(r"window.gtk = '(.*?)';", r.text)[0]except Exception as e:raise e# print(e)def langdetect(self, query):"""post query to /langdetectreturn json{"error":0,"msg":"success","lan":"en"}"""url = '/langdetect'data = {'query' : query}try:r = self.sess.post(url=url, data=data)except Exception as e:raise e# print(e)json = r.json()if 'msg' in json and json['msg'] == 'success':return json['lan']return Nonedef dictionary(self, query):"""max query count = 2get translate result from /v2transapi"""url = '/v2transapi'sign = pile(JS_CODE).call('token', query, self.gtk)lang = self.langdetect(query)data = {'from': 'en' if lang == 'en' else 'zh','to': 'zh' if lang == 'en' else 'en','query': query,'simple_means_flag': 3,'sign': sign,'token': self.token,}try:r = self.sess.post(url=url, data=data)except Exception as e:raise eif r.status_code == 200:json = r.json()if 'error' in json:raise Exception('baidu sdk error: {}'.format(json['error']))# 998错误则意味需要重新加载主页获取新的tokenreturn jsonreturn Nonedef dictionary_by_lang(self, query,fromlang,tolang):"""max query count = 2get translate result from /v2transapi"""url = '/v2transapi'sign = pile(JS_CODE).call('token', query, self.gtk)lang = self.langdetect(query)data = {'from': fromlang,'to': tolang,'query': query,'simple_means_flag': 3,'sign': sign,'token': self.token,}try:r = self.sess.post(url=url, data=data)except Exception as e:raise eif r.status_code == 200:json = r.json()if 'error' in json:raise Exception('baidu sdk error: {}'.format(json['error']))# 998错误则意味需要重新加载主页获取新的tokenprint(json)return json["trans_result"]["data"][0]['dst']return Nonedef trans_baidu_en1(self,text):the_ret = self.dictionary_by_lang(text,"zh","en")ret1 = self.dictionary_by_lang(the_ret,"en","zh")return ret1
如果你有官方注册的appid，可以利用官方的方法。 百度翻译开放平台收费说明，总体说，其实还是挺有良心的，没有200万字内免费。
官方提供的是python2.7的程序，本人已经转换为python3.
直接上连接：/enter89/article/details/88287510
