利用百度翻译API做的在线翻译（python）

#! /usr/bin/python
# -*- coding: utf-8 -*-
#######################################
#
#e.g. how are you<ENTER>
#     你好<ENTER>
#      2013.5.16
#######################################
import urllib.request,urllib.parse
import os,sys
import json
API_KEY = 'awG627Qe2BTnrexw678GnYTi'
DU_TRANS_URL = 'http://openapi.baidu.com/public/2.0/bmt/translate?client_id=%s&q=%s&from=%s&to=%s'
def translate(src,flag):
    if flag == 'c2e':#chinese to english
        srclanguage = 'zh'
        destlanguage = 'en'
    elif flag == 'e2c':# english to chinese
        srclanguage = 'en'
        destlanguage = 'zh'
    elif flag == 'o2o':#auto
        srclanguage = 'auto'
        destlanguage = 'auto'
    else:
        print('Wrong Flag, use c2e(chinese to english) or e2c(english to chinese)!!')
        exit(-1)
    try:
        response = urllib.request.urlopen(DU_TRANS_URL%(API_KEY,urllib.parse.quote(src),srclanguage,destlanguage))
    except Exception as e:
        raise Exception('Connect to Server Fail!' + str(e))
    jsonData = json.loads(response.read().decode('utf-8'))
    if 'error_code' in response:
        raise Exception('trans error:' + jsonData['error_msg'])
      
    print('-->',jsonData['trans_result'][0]['dst'])
if __name__=='__main__':
    while 1:
        translatesting = input()
        if translatesting == '':#空串结束
            exit(0)
        translatesting_l = translatesting.split()
        translate(translatesting,'o2o')
        #实现判断输入的字符串是中文还是英文，转换成unicode编码后进行判断，未实现。
        # if 是英文:
        #   translate(translatesting,'e2c')
        # else是中文:
        #   translate(translatesting,'c2e')