Here\'s my problem. I implemented a small script that does some heavy calculation, as a node.js module. So, if I type \"node myModule.js\", it calculates for a second, then
It doesn't matter what you will use as a child (Node, Python, whatever), Node doesn't care. Just make sure, that your calculcation script exits after everything is done and result is written to stdout.
Reason why it's not working is that you're using spawn instead of exec.