python爬虫实现中英翻译词典

import urllib.requestimport urllib.parseimport jsondef en_zh(content):  url = 'http://fanyi.baidu.com/v2transapi'  head = {}  head['User-Agent'] = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36'    data={}  data['from'] = 'en'  data['to'] = 'zh'  data['query'] = content  data['transtype'] = 'translang'  data['simple_means_flag'] = '3'  data = urllib.parse.urlencode(data).encode('utf-8')  req =urllib.request.Request(url,data,head)  response=urllib.request.urlopen(req)  html = response.read().decode('utf-8')  target = json.loads(html)  print("翻译结果：%s" %(target['trans_result']['data'][0]['dst']))def zh_en(content):  url = 'http://fanyi.baidu.com/v2transapi'  data={}  data['from'] = 'zh'  data['to'] = 'en'  data['query'] = content  data['transtype'] = 'translang'  data['simple_means_flag'] = '3'  data = urllib.parse.urlencode(data).encode('utf-8')  req =urllib.request.Request(url,data)  req.add_header('User-Agent','Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.87 Safari/537.36')  response=urllib.request.urlopen(req)  html = response.read().decode('utf-8')  target = json.loads(html)  print("翻译结果：%s" %(target['trans_result']['data'][0]['dst']))while(True):  content = input("请输入要翻译的内容(按q退出)：")  if content=='q':    input("您已退出，欢迎再次使用")    break  en_zh(content)   zh_en(content)