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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_unread_topics(context, topics, user):
 """ This will return a list of unread topics for the given user from a given set of topics. Usage:: {% get_unread_topics topics request.user as unread_topics %} """

    request = context.get('request', None)
    return TrackingHandler(request=request).get_unread_topics(topics, user)