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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 check_can_approve(self, request, application, roles):
 """ Check the person's authorization. """

        try:
            authorised_persons = self.get_authorised_persons(application)
            authorised_persons.get(pk=request.user.pk)
            return True
        except Person.DoesNotExist:
            return False