def json_to_xml(json_data): """Convert JSON response to XML format (KeyXML structure)""" root = ET.Element("feed") root.set("xmlns", "http://www.w3.org/2005/Atom") root.set("xmlns:yt", "http://www.youtube.com/xml/schemas/2015")
You cannot proceed without a valid API Key. The "KeyXML" part of your search implies that the API key will be passed as a parameter in an XML request.
Accessing YouTube API data for top videos requires a Google Cloud project to generate an API key and enable the YouTube Data API v3. While the API primarily returns JSON, XML data can be obtained via RSS feeds using the channel URL format, or by using converters for API responses.
