python3.7.4 百度翻译api

import random
import hashlib
import http.client, urllib.parse
import json
class baidu_trans:
    # 接口地址
    domain = 'api.fanyi.baidu.com'
    uri = "/api/trans/vip/translate"
    # 密钥相关
    app_id = ""
    app_screct = ""
    salt = random.randint(32768, 65536)
    # 错误码
    errors_code = {
        "52000": "成功",
        "52001": "请求超时",
        "52002": "系统错误",
        "52003": "未受权用户",
        "54000": "必填参数为空",
        "54001": "签名错误",
        "54003": "访问频率受限",
        "54004": "帐户余额不足",
        "54005": "长query请求频繁",
        "58000": "客户端IP非法",
        "58001": "译文语言方向不支持",
        "58002": "服务当前已关闭",
        "90107": "认证未经过或未生效",
    }
    # 生成签名
    def getSign(self,context):
        sign = self.app_id + context + str(self.salt) + self.app_screct
        md5_obj = hashlib.md5()
        md5_obj.update(sign.encode('utf-8'))
        return md5_obj.hexdigest()
        pass
    # 将文本翻译为指定的语言
    def trans(self,context):
        httpClient = None
        form = {
            "q": context,
            "from": "en",
            "to": "zh",
            "appid": self.app_id,
            "salt": self.salt,
            "sign": self.getSign(context),
        }
        try:
            url = self.uri + '?appid=' + form["appid"] + '&q=' + urllib.parse.quote(form["q"]) + '&from=' + form["from"] + '&to=' + form["to"] + '&salt=' + str(form["salt"]) + '&sign=' + form['sign']
            httpClient = http.client.HTTPConnection(self.domain)
            httpClient.request('GET', url)
            response = httpClient.getresponse()
            result = json.loads(bytes.decode(response.read()))
            if 'error_code' in result:
                print('错误'+result["error_code"]+':' + self.errors_code[result["error_code"]] )
            return result["trans_result"][0]['dst']
        except Exception as e:
            print(e)
        finally:
            if httpClient:
                httpClient.close()
        pass
    pass