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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 ActivateCard(self, card):
 """Activate a card."""

        if not hasattr(card, 'connection'):
            card.connection = card.createConnection()
            if None != self.parent.apdutracerpanel:
                card.connection.addObserver(self.parent.apdutracerpanel)
            card.connection.connect()
        self.dialogpanel.OnActivateCard(card)