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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_limit(self, request):
 """Return limit parameter."""

        if self.limit_query_param:
            try:
                return _positive_int(
                    get_query_param(request, self.limit_query_param),
                    strict=True,
                    cutoff=self.max_limit
                )
            except (KeyError, ValueError):
                pass

        return self.default_limit