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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 request(self, uri, method, *args, **kwargs):
 """ Formats the request into a dict representing the headers and body that will be used to make the API call. """

        if self.timeout:
            kwargs["timeout"] = self.timeout
        kwargs["verify"] = self.verify_ssl
        kwargs.setdefault("headers", kwargs.get("headers", {}))
        kwargs["headers"]["User-Agent"] = self.user_agent
        kwargs["headers"]["Accept"] = "application/json"
        if ("body" in kwargs) or ("data" in kwargs):
            if "Content-Type" not in kwargs["headers"]:
                kwargs["headers"]["Content-Type"] = "application/json"
            elif kwargs["headers"]["Content-Type"] is None:
                del kwargs["headers"]["Content-Type"]
        # Allow subclasses to add their own headers
        self._add_custom_headers(kwargs["headers"])
        resp, body = pyrax.http.request(method, uri, *args, **kwargs)
        if resp.status_code >= 400:
            raise exc.from_response(resp, body)
        return resp, body