Launch python script in html page

[GRicc]

Hi,

I created a node js project into my Intel XDK. I use an Intel Edison and I want to use it as a web server.

I want to create an index.html page where there is a button and when the button is pressed it is launched a python script. I'm new on Edison and I have no idea to start with python on Edison.

Any help is appreciated.

Best regards.

Giuseppe

[Matthias_H_Intel]

not quite sure what you're seing. Following is running just fine from XDK and starting the python blink example (same as blink-io8.py but changed to io13 to have on board led blinking).

As mentioned, I use the relative paths as per below:

var pythonShell = require('python-shell');

pythonShell.run('../../usr/share/mraa/examples/python/blink-io13.py', function(err){

if (err) throw err;

console.log('finished');

});

Only drawback: Stopping the app from XDK wouldn't stop the python script running. But you'll find the python process running on your target

# ps | grep python

628 root 7384 S python ../../usr/share/mraa/examples/python/blink-io13.py

[GRicc]

Hi guys,

I am happy to announce that it has found a way to run the script python. I left python-shell and I installed another library: python-runner and it works in xdk.

My main.js is:

//Required

var mraa = require('mraa'); //require mraa

var Cylon = require ('cylon');//require cylon

var querystring = require('querystring');

var express = require('express');

var Python = require("python-runner");

var fs = require('fs');

/////////////////////////////////////////////////START//

//Set Public folder

var app = express();

var path = require('path');

app.use(express.static(__dirname + '/public'));

app.get('/', function (req, res) {

res.sendFile(index.htm);

// res.sendFile(path.join(__dirname + '/index.htm'));

});

//Start Listening

var server = app.listen(5555, function(){

var host = server.address().address;

var port = server.address().port;

console.log('Example app listening at http://%s:%s', '192.168.0.139', port);

});

//Start dialog with index.html page

var io = require('socket.io').listen(server); // to dialog with the webpage

io.sockets.on('connection', function(socket){

//recieve client data with CYLON

socket.on('launch_on', function(){

Python.execScript(

__dirname + "/example.py",

{

bin: "python2",

args: [ "argument" ]

}

)

.then(function(data){

console.log(data);

res.writeHead(200, {'Content-Type': 'text/plain'});

res.end('ok');

})

.catch(function(err){

console.log("Error", err);

res.writeHead(500, {'Content-Type': 'text/plain'});

res.end('error');

});

});

});

console.log('-------------------------------------------------------------');

console.log('The express app is running');

console.log('-------------------------------------------------------------');

and my esample file is:

import numpy as np

print('Carma Carpooling')

print('Get there together')

a=np.array([1,2,3,4,5])

b=np.array([10,23,45,65,78])

print(a)

print(b)

print('somma di a e b')

data=a+b

print(data)

So, when I press the button in the browser in the xdk console I have:

Carma Carpooling

Get there together

[1 2 3 4 5]

[10 23 45 65 78]

somma di a e b

[11 25 48 69 83]

Error [ReferenceError: res is not defined]

I don't understand the error..but my next task is to send the data of python script (print, plot,...) to the browser.

Thanks.

Giuseppe.