python "爬虫+有道词典"实现一个简单翻译程序

http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule&sessionFrom=http://fanyi.youdao.com/

http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule&smartresult=ugc&sessionFrom=http://www.youdao.com/

# coding=utf-8

import urllib
import urllib2
import json

‘‘‘
功能说明:
根据输入要翻译的文字,进行有道自动翻译:
实现中文->英文、英语及其他语言->中文的转换
‘‘‘


class YoudaoFanyi:
    def __init__(self):
        self.url = ‘http://fanyi.youdao.com/translate?smartresult=dict&smartresult=rule&smartresult=ugc&sessionFrom=http://www.youdao.com/‘
        self.headers = {
            "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.109 Safari/537.36",
        }

    def get_encoded_payload(self, key):
        ‘‘‘
        :param key: 带翻译的文字
        :return: 返回url编码过的数据
        ‘‘‘
        payload = {
            "i": key,
            ‘type‘: ‘AUTO‘,
            "doctype": "json",
            "xmlVersion": "1.8",
            "keyfrom": "fanyi.web",
            "action": "FY_BY_CLICKBUTTON",
            "typoResult": "true",
            "ue": "UTF-8"
        }
        data = urllib.urlencode(payload)
        return data

    def show_translate_result(self, html):
        ‘‘‘
        解析返回的json数据
        :param html: 返回的json数据
        :return: None
        ‘‘‘
        data = json.loads(html)
        print ‘*‘ * 10
        target = data[‘translateResult‘][0][0][‘tgt‘]
        print target
        if ‘smartResult‘ in data:
            result = data[‘smartResult‘][‘entries‘]
            result_str = ‘\n‘.join(result[1:])  # result列表中第一个元素为""
            print ‘有道词典结果‘
            print result_str
        print ‘*‘ * 10

    def translate(self, content):
        ‘‘‘
        对输入的内容进行翻译
        :param content: 带翻译的内容
        :return: None
        ‘‘‘
        payload = self.get_encoded_payload(content)  # 获取经过url编码后的数据
        request = urllib2.Request(
            self.url,
            data=payload,
            headers=self.headers)  # 构造请求
        response = urllib2.urlopen(request)  # 发送请求
        self.show_translate_result(response.read())  # 解析结果


if __name__ == ‘__main__‘:
    youdao = YoudaoFanyi()
    while True:
        key = raw_input("请输入你要翻译的文字[Q|quit 退出]: ").strip()
        if key in [‘Q‘, ‘quit‘]:
            break
        youdao.translate(key)