关于python：如何自动格式化QLabel文本

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label=QtGui.QLabel()  

text ="Somewhere over the rainbow Way up high And the dreams that you dreamed of Once in a lullaby"    

label.setText(text)
label.show()

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text ="Somewhere over the rainbow Way up high And the dreams that you dreamed of Once in a lullaby..."    

class Label(QtGui.QLabel):
    def __init__(self, parent=None):
        super(Label, self).__init__(parent)  

    def resizeEvent(self, event):
        self.formatText()
        event.accept()

    def formatText(self):
        width = self.width()
        text = self.text()
        new = ''
        for word in text.split():
            if len(new.split('\
')[-1])<width*0.1:
                new = new + ' ' + word
            else:
                new = new + '\
' + ' ' + word
        self.setText(new)

myLabel = Label()
myLabel.setText(text)
myLabel.resize(300, 50)
font = QtGui.QFont("Courier New", 10)
font.setStyleHint(QtGui.QFont.TypeWriter)
myLabel.setFont(font)
myLabel.formatText()
myLabel.show()