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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def widgetSubCheckBoxRect(widget, option):
 """ Returns the rectangle of a check box drawn as a sub element of widget """

    opt = QtWidgets.QStyleOption()
    opt.initFrom(widget)
    style = widget.style()
    return style.subElementRect(QtWidgets.QStyle.SE_ViewItemCheckIndicator, opt, widget)