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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 _pushMessages(self):
 """ Internal callback used to make sure the msg list keeps moving. """

        # This continues to get itself called until no msgs are left in list.
        self.showStatus('')
        if len(self._statusMsgsToShow) > 0:
            self.top.after(200, self._pushMessages)