PyQT开发的简易有道词典

最近学习PyQt，写了一个比较简单的字典，使用了有道翻译OpenAPI，下面是代码：

# -*- coding: utf-8 -*-__author__ = 'Cullen'import urllibimport jsonimport urllib2from PyQt4 import QtGui, QtCoreimport sysAPI_KEY = '1349304933'KEYFROM = 'cullen'class MyDict(QtGui.QWidget):   def __init__(self):      super(MyDict, self).__init__()      self.setGeometry(150, 150, 350, 300)      self.setWindowTitle(u"有道字典简易版")      self.setWindowIcon(QtGui.QIcon("./dict.png"))      self.textEdit = QtGui.QLineEdit()      self.searchBut = QtGui.QPushButton(u"查找")      self.showTran = QtGui.QTextBrowser()      grid = QtGui.QGridLayout()      grid.addWidget(self.textEdit, 1, 0)      grid.addWidget(self.searchBut, 1, 1)      grid.addWidget(self.showTran, 2, 0, 1, 2)      self.setLayout(grid)      self.connect(self.searchBut, QtCore.SIGNAL('clicked()'),  self.get_text)   #@QtCore.pyqtSlot()   def get_text(self):      text = self.textEdit.text()      if len(text) != 0:         result = get_translate(text)         self.showTran.clear()         self.showTran.append(decode_data(result))def main():   app = app = QtGui.QApplication(sys.argv)   qb = MyDict()   qb.show()   sys.exit(app.exec_())def get_translate(word):   url = 'http://fanyi.youdao.com/openapi.do'   data = {   'keyfrom': KEYFROM,   'key': API_KEY,   'type': 'data',   'doctype': 'json',   'version': 1.1,   'q': word   }   data = urllib.urlencode(data)   url = url+'?'+data   req = urllib2.Request(url)   response = urllib2.urlopen(req)   result = json.loads(response.read())   return resultdef decode_data(json_data):   query = json_data.get('query','')   translation = json_data.get('translation','')   basic = json_data.get('basic','')   sequence = json_data.get('web',[])   phonetic,explains_txt,seq_txt,log_word_explains = '','','',''   if basic:      phonetic = basic.get('phonetic','')      explains = basic.get('explains',[])      for obj in explains:         explains_txt += obj+'\n'         log_word_explains += obj+','   if sequence:      for obj in sequence:         seq_txt += obj['key']+'\n'         values = ''         for i in obj['value']:            values += i+','         seq_txt += values+'\n'   print_format = '*'*40 + '\n'   print_format += u'查询的单词:  %s [%s]\n' %(query, phonetic)   print_format += explains_txt   print_format += '-'*20+'\n'+seq_txt   print_format += '*'*40+'\n'   #gbk_format = print_format.encode('GBK', 'ignore')   #print gbk_format   return print_formatif __name__ == "__main__":   main()

下面是效果;