from PyQt4 import QtGui

from PyQt4 import QtCore

class Editor(QtGui.QTextEdit):

    def __init__(self, parent=None):

        super(Editor, self).__init__(parent)

class Main(QtGui.QMainWindow):

    def __init__(self, parent=None):

        super(Main, self).__init__(parent)

        self.initUi()

    def initUi(self):

        self.setWindowTitle("Editor")

        self.resize(640, 480)

        newAc = QtGui.QAction(‘New‘, self)

        newAc.setShortcut(‘Ctrl+N‘)

        newAc.triggered.connect(self.new_)

        menu = self.menuBar()

        filemenu = menu.addMenu(‘&File‘)

        filemenu.addAction(newAc)

        self.tab = QtGui.QTabWidget(self)

        self.setCentralWidget(self.tab)

        self.tab.addTab(Editor(), "New Text")

    def new_(self):

        self.tab.addTab(Editor(), "New text")

def main():

    import sys

    app = QtGui.QApplication(sys.argv)

    w = Main()

    w.show()

    sys.exit(app.exec_())

if __name__ == "__main__":

    main()

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