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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 on_enter(self, *args):
 """Call the setter and blank myself out so that my hint text shows up. It will be the same you just entered if everything's working. """

        if self.text == '':
            return
        self.setter(self.text)
        self.text = ''
        self.focus = False