I have a node server that executes an external python script via
child_process execFile()
I have no problem executing it with a known number of arguments i just pass it like
const { execFile } = require('node:child_process');
const child = execFile('python', [conf.default.python_dir + "/script.py", arg1, arg2, arg3, arg4], (error:string, stdout:string, stderr:string) => {
if (error) {
throw error;
}
console.log(stdout);
});
However i need to pass changing number of arguments because i do not know how many elements my data is going to have. How can i pass all the elements of an array (with changing length) into this python script (as arguments).
I do not have access to the python script but python script is ideally able to read unlimited number of arguments and i only can pass arguments via command-line
Using the spread operation to spread arrays (...) you can create a function that accepts unlimited amount of arguments and you spread those arguments into the execFile
const { execFile } = require('node:child_process');
function execFileWithArgs(...args) {
const child = execFile('python', [conf.default.python_dir + "/script.py", ...args], (error:string, stdout:string, stderr:string) => {
if (error) {
throw error;
}
console.log(stdout);
});
}
execFileWithArgs("unlimited","arguments","here",":)")