os.path.join (folder, filename) ensures the path is correct for the system. On Windows, it uses backslashes (reports\summary.txt); on Linux and macOS it uses forward slashes (reports/summary.txt).

CoWasm, or "Collaborative WebAssembly," goes far beyond just Python. The collaboration aspects will be part of CoCalc at some point in the future. CoWasm will support various technologies (such as ...