このJavaコードをエミュレートしようとしています
            public static void uploadFile(String filename, String systemID){
            try{
                    String createNew = "false";
                    //check for backup files to know if we should make a new file on the server
                    File f = new File(filename + ".1");
                    if(f.exists()){
                            createNew = "true";
                            f.delete();
                    }
                    HttpURLConnection httpUrlConnection = (HttpURLConnection)new URL(uploadURL).openConnection();
            httpUrlConnection.setDoOutput(true);
            httpUrlConnection.setRequestMethod("POST");
            httpUrlConnection.setRequestProperty("Content-encoding", "deflate");
            httpUrlConnection.setRequestProperty("Content-type", "application/octet-stream");
            java.io.OutputStream os = httpUrlConnection.getOutputStream();
            Thread.sleep(1000);
            String fileData = IOUtils.toString(new FileReader(filename));
            String request = "filedata=" + fileData + "&filename=" + filename + "&systemid=" + systemID + "&createNew=" + createNew;
            DeflaterOutputStream deflate = new DeflaterOutputStream(os);
            deflate.write(request.getBytes());
            deflate.flush();
            deflate.close();
            os.close();
            BufferedReader in = new BufferedReader(new InputStreamReader(httpUrlConnection.getInputStream()));
            String s = null;
            while ((s = in.readLine()) != null) {
                System.out.println(s);
            }
            in.close();
            //fis.close();
            }catch(Exception e){
                    e.printStackTrace();
            }
            static String uploadURL = "http://vp-creations.com/utilities/fileupload.php";
リクエストを使用するPythonでは、サーバーから適切な応答を取得できなかったため、単純なものが欠けていると思います
import requests
url = 'http://vp-creations.com/utilities/fileupload.php'
files = {'file': open('C:\\etc\\guitartab.txt', 'rb')}
headers = {'Content-encoding': 'deflate', 'Content-type': 'application/octet-stream'}
payload = {'filedata=': 'foo', 'filename=': 'bar', 'systemid=' : 'fooe', 'createNew=' : 'false'}
r = requests.post(url, files=files, headers=headers, data=payload)
私が取得し続けるサーバーからの応答は {"response":"error","comment":"missing at least one parameter"}' です。