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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 set_response_defaults(self, response, request=None):
 """Sets up the response defaults that are defined in the URL route"""

        for header_name, header_value in self.response_headers:
            response.set_header(header_name, header_value)
        if self.set_status:
            response.status = self.set_status
        response.content_type = self.content_type(request, response)