python写的一个简单的英汉翻译

# -*- coding: utf-8 -*-
import sys
from PyQt4 import QtGui,QtCore
import urllib
import json
from urllib import urlencode

class LH_QWidget(QtGui.QWidget):
def __init__(self):
QtGui.QWidget.__init__(self)
self.first=QtGui.QLineEdit(self) #添加一个文本框
#label1=QtGui.QLabel('+',self)
#self.second=QtGui.QLineEdit(self)
#label2=QtGui.QLabel('=',self)
self.third=QtGui.QLineEdit(self)  #再添加一个文本框
button=QtGui.QPushButton('summit',self) #添加一个按钮

grid=QtGui.QGridLayout()  #布局
grid.addWidget(self.first,0,0)
#grid.addWidget(label1,0,1)
#grid.addWidget(self.second ,0,2)
#grid.addWidget(label2,0,3)
grid.addWidget(self.third,1,0)
grid.addWidget(button,2,0)

self.resize(300,150)
self.setWindowTitle("loster")
self.setLayout(grid)

self.connect(button,QtCore.SIGNAL('clicked()'),chuli) #按钮的监听，调用函数chuli()

def getfirst(self):
return self.first.text()
def getsecond(self):
return self.second.text()
def getthird(self,text):
self.third.setText(text)

def chuli():
url='http://fanyi.youdao.com/openapi.do?keyfrom=123licheng&key=1933182090&type=data&doctype=json&version=1.1&q='
x=LH_Widget.getfirst() #获取要翻译的文本
#print x
x= unicode(x,'utf-8').encode('utf-8') #把输入转化成utf-8编码
print unicode(x,'utf-8').decode('utf-8')

result=urllib.urlopen(url+x).read() #读入
jsonval=json.loads(result)  #获取返回的json结构

print jsonval.values()
print '---------------'
print jsonval.keys()
print jsonval["translation"][0]
LH_Widget.getthird(jsonval["translation"][0])

if __name__=="__main__":
app=QtGui.QApplication(sys.argv)
LH_Widget=LH_QWidget()
LH_Widget.show()
sys.exit(app.exec_())