import sys

from PyQt4.QtCore import *

from PyQt4.QtGui import *

from PyQt4.QtWebKit import *

class MyBrowser(QWidget):

    def __init__(self, parent = None):

        super(MyBrowser, self).__init__(parent)

        self.createLayout()

        self.createConnection()

    def search(self):

        address = str(self.addressBar.text())

        if address:

            if address.find(‘://‘) == -1:

                address = ‘http://‘ + address

            url = QUrl(address)

            self.webView.load(url)

    def createLayout(self):

        self.setWindowTitle("keakon‘s browser")

        self.addressBar = QLineEdit()

        self.goButton = QPushButton("&GO")

        bl = QHBoxLayout()

        bl.addWidget(self.addressBar)

        bl.addWidget(self.goButton)

        self.webView = QWebView()

        layout = QVBoxLayout()

        layout.addLayout(bl)

        layout.addWidget(self.webView)

        self.setLayout(layout)

    def createConnection(self):

        self.connect(self.addressBar, SIGNAL(‘returnPressed()‘), self.search)

        self.connect(self.addressBar, SIGNAL(‘returnPressed()‘), self.addressBar, SLOT(‘selectAll()‘))

        self.connect(self.goButton, SIGNAL(‘clicked()‘), self.search)

        self.connect(self.goButton, SIGNAL(‘clicked()‘), self.addressBar, SLOT(‘selectAll()‘))

app = QApplication(sys.argv)

browser = MyBrowser()

browser.show()

sys.exit(app.exec_())

pyqt练习x3.14