How to make vscode run .sage files with sage command in terminal and with python syntax
Best solution for code runner extention in visual studio code (vscode).

1. add "*.sage" "python" key value in file association.
2. Set executorMap python to null "python": null
3. Assign 2 key value pair in executorMapByFileExtension ".py" : "python3 -u", ".sage": "cd $dir && sage $fileName"

#inspired by this thread https://github.com/formulahendry/vscode-code-runner/issues/329#issuecomment-409806108