python实现在线翻译功能

对于需要大量翻译的数据，人工翻译太慢，此时需要使用软件进行批量翻译。

1.使用360的翻译

def fanyi_word_cn(string):
 url="https://fanyi.so.com/index/search"
 #db_path = './db/tasks.db'
 Form_Data= {}

 #这里输入要翻译的英文
 Form_Data['query']= string
 Form_Data['eng']= '1'

 #用urlencode把字典变成字符串，#服务器不接受字典，只接受字符串和二进制
 data= parse.urlencode(Form_Data).encode('utf-8')

 #改成服务器可识别的数据后，请求，获取回应数据
 response= request.urlopen(url, data)

 html= response.read().decode("utf-8")#解码方式

 #java中的对象（集合）和数组（元素为集合）,loads可转Python字典
 result= json.loads(html)

 #字典调取键名data下的键名fanyi,获取其值
 translate_result= result["data"]["fanyi"]
 #print(translate_result)
 return translate_result

2.使用Google自带的API来翻译

注意，需要安装API模块即可。

pip install translator

#google api, per 1000 words everyday
def translate_cn_api(content):
 translator= Translator(to_lang="zh")
 translation = translator.translate(content)
 return translation

3.使用Google翻译来做，是由于Google提供的API有字节限制，每天只能翻译1000字。

备注：环境准备

3.1 java环境

3.2 安装execjs模块

pip install PyExecJS

3.3 两个实现模块

HandleJs.py

#coding=utf-8
import execjs

class Py4Js(): 

 def __init__(self):
  self.ctx = execjs.compile("""
  function TL(a) {
  var k = "";
  var b = 406644;
  var b1 = 3293161072; 

  var jd = ".";
  var $b = "+-a^+6";
  var Zb = "+-3^+b+-f"; 

  for (var e = [], f = 0, g = 0; g < a.length; g++) {
   var m = a.charCodeAt(g);
   128 > m ? e[f++] = m : (2048 > m ? e[f++] = m >> 6 | 192 : (55296 == (m & 64512) && g + 1 < a.length && 56320 == (a.charCodeAt(g + 1) & 64512) ? (m = 65536 + ((m & 1023) << 10) + (a.charCodeAt(++g) & 1023),
   e[f++] = m >> 18 | 240,
   e[f++] = m >> 12 & 63 | 128) : e[f++] = m >> 12 | 224,
   e[f++] = m >> 6 & 63 | 128),
   e[f++] = m & 63 | 128)
  }
  a = b;
  for (f = 0; f < e.length; f++) a += e[f],
  a = RL(a, $b);
  a = RL(a, Zb);
  a ^= b1 || 0;
  0 > a && (a = (a & 2147483647) + 2147483648);
  a %= 1E6;
  return a.toString() + jd + (a ^ b)
 }; 

 function RL(a, b) {
  var t = "a";
  var Yb = "+";
  for (var c = 0; c < b.length - 2; c += 3) {
   var d = b.charAt(c + 2),
   d = d >= t ? d.charCodeAt(0) - 87 : Number(d),
   d = b.charAt(c + 1) == Yb ? a >>> d: a << d;
   a = b.charAt(c) == Yb ? a + d & 4294967295 : a ^ d
  }
  return a
 }
 """) 

 def getTk(self,text):
  return self.ctx.call("TL",text)

main.py

#coding=utf-8
#import urllib.request
import urllib2
from HandleJs import Py4Js
from translate import Translator
import requests

# Example: find_last('aaaa', 'a') returns 3
# Make sure your procedure has a return statement.
def find_last(string,str):
 last_position=-1
 while True:
  position=string.find(str,last_position+1)
  if position==-1:
   return last_position
  last_position=position

def open_url(url):
 headers = {'User-Agent':'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:23.0) Gecko/20100101 Firefox/23.0'}
 req = urllib2.Request(url = url,headers=headers)
 response = urllib2.urlopen(req)
 data = response.read().decode('utf-8')
 return data 

def translate_core(content,tk, language):
 if len(content) > 4891:
  print("too long byte >4891")
  return

 content = urllib2.quote(content) 

 if language == 'de':
  url = "http://translate.google.cn/translate_a/single?client=t"+ "&sl=de&tl=zh-CN&hl=zh-CN&dt=at&dt=bd&dt=ex&dt=ld&dt=md&dt=qca"+"&dt=rw&dt=rm&dt=ss&dt=t&ie=UTF-8&oe=UTF-8&clearbtn=1&otf=1&pc=1"+"&srcrom=0&ssel=0&tsel=0&kc=2&tk=%s&q=%s"%(tk,content)
 else:
  url = "http://translate.google.cn/translate_a/single?client=t"+ "&sl=en&tl=zh-CN&hl=zh-CN&dt=at&dt=bd&dt=ex&dt=ld&dt=md&dt=qca"+"&dt=rw&dt=rm&dt=ss&dt=t&ie=UTF-8&oe=UTF-8&clearbtn=1&otf=1&pc=1"+"&srcrom=0&ssel=0&tsel=0&kc=2&tk=%s&q=%s"%(tk,content) 

 #result为json格式
 result = open_url(url)
 #print('results:' + result)

 if len(content) < 10:
  end = result.find("\",")
  if end > 4:
   return result[4:end]
 else:
  result_all = ''
  if language == 'de':
   result_all = result.split(',null,"de",null,null,')[0].replace('[[', '').replace(']]', ']')[1:]
  else:
   result_all = result.split(',null,"en",null,null,')[0].replace('[[', '').replace(']]', ']')[1:]

  #print('result_all:' + result_all)

  output_cn = ''
  #解析中文字段并拼接
  list = result_all.split('],[')
  for i in range(len(list)-1):
   end = list[i].find("\",")
   tmp_buf = list[i][1:end]
   output_cn = output_cn + tmp_buf
  return output_cn

def translate_normal(content, language):
 js = Py4Js() 

 tk = js.getTk(content)
 #print('english:' + content)
 cn_buf = translate_core(content,tk, language)

 #print('Chinese:' + cn_buf)
 return cn_buf

def translate_cn(content, language):
 LEN_LIMIT = 4891
 all_len = len(content)
 print('en:' + content)
 if all_len > LEN_LIMIT:
  content_cn = ''
  while True:
   content_limit = content[0:LEN_LIMIT]
   limit_end = find_last(content_limit, '.') + 1
   #print('limit_end:' + str(limit_end))
   if limit_end == 0:
    limit_end = find_last(content_limit, ' ') + 1
    if limit_end == 0:
     limit_end = LEN_LIMIT
   content_en = content[0:limit_end]
   leave_len = all_len - limit_end
   if content_en == '':
    break;
   #print('content_en:' + content_en)
   content_cn = content_cn + translate_normal(content_en, language);
   content = content[limit_end:]

  return content_cn
 else:
  return translate_normal(content, language)

#google api, per 1000 words everyday
def translate_cn_api(content):
 translator= Translator(to_lang="zh")
 translation = translator.translate(content)
 return translation

if __name__ == "__main__":
 content = """Beautiful is better than ugly.
  Explicit is better than implicit.
  Simple is better than complex.
  Complex is better than complicated.
  Namespaces are one honking great idea -- let's do more of those!"""

 #
 content = """
 IT-Grundschutz M5.131: Absicherung von IP-Protokollen unter Windows Server 2003."""
 #content = 'High'
 content = """Beautiful is better than ugly.
  Explicit is better than implicit.
  Simple is better than complex.
  Complex is better than complicated.
  Namespaces are one honking great idea -- let's do more of those!"""
 language = 'en'

 test = translate_cn(content.replace('\n', ''), language)
 print('ok:' + test)

 #content = 'Checks version'

此处实现了德语翻译成中文和英文翻译成中文。

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