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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 add_class_button_status(self):
 """Function to enable or disable add class button."""

        if self.class_form.text() and self.radius_form.value() >= 0:
            self.add_class_button.setEnabled(True)
        else:
            self.add_class_button.setEnabled(False)