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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_upload_url(self, timeout=None):
 """ Get a special URL for submitted files bigger than 32MB. In order to submit files bigger than 32MB you need to obtain a special upload URL to which you can POST files up to 200MB in size. This API generates such a URL. :param timeout: The amount of time in seconds the request should wait before timing out. :return: JSON special upload URL to which you can POST files up to 200MB in size. """

        params = {'apikey': self.api_key}

        try:
            response = requests.get(self.base + 'file/scan/upload_url',
                                    params=params,
                                    proxies=self.proxies,
                                    timeout=timeout)
            if response.status_code == requests.codes.ok:
                return response.json().get('upload_url')
            else:
                return dict(response_code=response.status_code)
        except requests.RequestException as e:
            return dict(error=str(e))