刚开始写这个小工具的时候遇到了查询过程软件界面假死的情况。
后来在华蟒讨论组里得到指点，使用多线程将查询动作另开线程，同ui线程分开。
使用python的threading类创建新线程后问题果断解决。
这里使用QThread创建新线程（PySide）：
#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys
from PySide.QtCore import *
from PySide.QtGui import *
import urllib2
import re
#import threading
from BeautifulSoup import BeautifulSoup
class Dialog(QDialog):
def __init__(self,parent=None,):
super(Dialog,self).__init__(parent)
self.setWindowTitle(u"词典")
self.browser=QTextBrowser()
self.edit=QLineEdit(u"输入单词")
self.browser.setText("QtSharp's Toy")
quitbutton=QPushButton(u'退出')
quitbutton.clicked.connect(app.quit)
searchbutton=QPushButton(u'查询')
searchbutton.clicked.connect(self.sendword)
layout=QVBoxLayout()
layout.addWidget(searchbutton)
layout.addWidget(self.edit)
layout.addWidget(quitbutton)
layout.addWidget(self.browser)
self.setLayout(layout)
def sendword(self):
word=self.edit.text()
self.sendsignal.emit(word)
sendsignal=Signal(str)
@Slot(str)
def getexp(self,exp):
self.browser.setText(exp)
class Search(QThread):
def __init__(self,parent=None,):
super(Search,self).__init__(parent)
def run(self):
wordweb=urllib2.urlopen("http://dict.baidu.com/s?wd=%s"% self.word)
charset = wordweb.headers['Content-Type'].split(' charset=')[0].lower()
soup=BeautifulSoup(wordweb,fromEncoding=charset)
exp=soup.findAll(text=re.compile(u'译典通'))[0].parent.parent.parent.parent
exp=str(exp).decode('utf8')
self.exped.emit(exp)
exped=Signal(str)
@Slot(str)
def getword(self,word):
self.word=word
self.run()
if __name__=='__main__':
app=QApplication(sys.argv)
dialog=Dialog()
search=Search()
dialog.sendsignal.connect(search.getword)
search.exped.connect(dialog.getexp)
dialog.show()
sys.exit(app.exec_())