pyqt5_webbrowser

import sys
from PyQt5 import QtCore, QtGui, QtWebKitWidgets, QtWidgets
#requires package python-pyqt5.qtwebkit for QtWebKitWidgets

class Browser(QtWidgets.QMainWindow):

    def __init__(self):
        QtWidgets.QMainWindow.__init__(self)
        self.resize(800,600)
        self.centralwidget = QtWidgets.QWidget(self)

        self.mainLayout = QtWidgets.QHBoxLayout(self.centralwidget)
        self.mainLayout.setSpacing(0)
        self.mainLayout.setContentsMargins(1, 1, 1, 1)

        self.frame = QtWidgets.QFrame(self.centralwidget)

        self.gridLayout = QtWidgets.QVBoxLayout(self.frame)
        self.gridLayout.setContentsMargins(0, 0, 0, 0)
        self.gridLayout.setSpacing(0)

        self.horizontalLayout = QtWidgets.QHBoxLayout()
        self.tb_url = QtWidgets.QLineEdit(self.frame)
        self.bt_back = QtWidgets.QPushButton(self.frame)
        self.bt_ahead = QtWidgets.QPushButton(self.frame)

        self.bt_back.setIcon(QtGui.QIcon().fromTheme("go-previous"))
        self.bt_ahead.setIcon(QtGui.QIcon().fromTheme("go-next"))

        self.horizontalLayout.addWidget(self.bt_back)
        self.horizontalLayout.addWidget(self.bt_ahead)
        self.horizontalLayout.addWidget(self.tb_url)
        self.gridLayout.addLayout(self.horizontalLayout)

        self.html = QtWebKitWidgets.QWebView()
        self.gridLayout.addWidget(self.html)
        self.mainLayout.addWidget(self.frame)
        self.setCentralWidget(self.centralwidget)

        self.tb_url.returnPressed.connect(self.browse)
        self.bt_back.clicked.connect(self.html.back)
        self.bt_ahead.clicked.connect(self.html.forward)

        self.default_url = "http://www.google.com/webhp?complete=0&hl=en"
        self.tb_url.setText(self.default_url)
        self.browse()

    def browse(self):
        url = self.tb_url.text() if self.tb_url.text() else self.default_url
        self.html.load(QtCore.QUrl(url))
        self.html.show()

if __name__ == "__main__":

    app = QtWidgets.QApplication(sys.argv)
    main = Browser()
    main.show()
sys.exit(app.exec_())