rv.py 文件源码

def get_wavelength_region(self):
        try:
            wl_lower = float(self.text_lower_wl.text())
        except ValueError:
            wl_lower = None
            self.text_lower_wl.setStyleSheet(\
                'QLineEdit { background-color: %s }' % '#f6989d') #red
        else:
            self.text_lower_wl.setStyleSheet(\
                'QLineEdit { background-color: %s }' % 'none')
        try:
            wl_upper = float(self.text_upper_wl.text())
        except ValueError:
            wl_upper = None
            self.text_upper_wl.setStyleSheet(\
                'QLineEdit { background-color: %s }' % '#f6989d') #red
        else:
            self.text_upper_wl.setStyleSheet(\
                'QLineEdit { background-color: %s }' % 'none')

        if wl_lower is None or wl_upper is None: return None
        if wl_lower >= wl_upper: return None
        return (wl_lower, wl_upper)