python14.2.2翻译文本例子报错？

Angel61

源码：
#p14_2.py
import urllib.request
import urllib.parse
url ="https://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule"
data ={}
data['type'] = 'AUTO'
data['i']='I love FishC.com!'
data['doctype']='json'
data['xmlVersion']='1.6'
data['deyfrom']='fanyi.web'
data['typeResult']='true'
data =urllib.parse .urlencode (data).encode('utf-8')
response=urllib.request.urlopen(url,data)
html=response.read().decode('utf-8')
print(html)

{"errorCode":50}
大神们，我在跟着书实践例子时报错50，是为什么？