https://api.groupdocs.com/v2.0/spec/#!/storage/Upload_POST indicates how certain arguments are query params, but doesn’t describe how the file contents are handled in the request body (or how the headers should be set) and my various stabs at it were unsuccessful. i don’t see documentation for the storages product at all.
Thank you for the question. To upload the file please use “Upload” method from the Python API SDK. For more info and the code example of how to use it please check our live demo sample here.