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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 get_current_live_chat(self):
 """ Check if there is a live chat on the go, so that we should take over the AskMAMA page with the live chat. """

        now = datetime.now()
        chat = self.upcoming_live_chat()
        if chat and chat.is_in_progress():
            return chat
        return None