python script into MagicMirror module

sureshkocherla

Hi, I want to run the python script into MagicMirror module. Kindly give the solution to my requirement.

Sean

@sureshkocherla
You can execute an external program with Child Process of node.js. After reading this, create or modify your module.
https://nodejs.org/api/child_process.html

sureshkocherla

Hi, Sean Thanks for your valuable reply,
I have one python script. I want to create a new custom module for the requirement and also run this python script automatically in the module.
Kindly guide me.

Sean

@sureshkocherla
Ok, Let’s see the example.
MMM-Tools is using several external shell scripts in the module.
https://github.com/eouia/MMM-Tools

See the node_helpers.js (https://github.com/eouia/MMM-Tools/blob/master/node_helper.js)
First, Child process could not be used on the frontend, so you need to build node_helpers.js for it.

in line 10

var exec = require('child_process').exec

child_proces.exec is declared to use. You might need other methods like spawn or fork for your purpose.

in line 123.

getIP : function() {
    exec (this.scripts['IP'], (err, stdout, stderr)=>{
      if (err == null) {
        var matched = stdout.trim().match(/\b\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\b/)
        this.status['IP'] = (matched) ? matched[0] : "Unknown"
      }
    })
  },

this is all for your using exec.

exec ("your command", function callback(error, outputonsuccess, outputonerr) {
   console.log(error, outputonsuccess, outputonerror)
})

Try this in your module.

※ child_process.exec is a just simple method to get result of external command. But when you need more complexed function, you could consider spawn or fork or execFile instead exec

https://dzone.com/articles/understanding-execfile-spawn-exec-and-fork-in-node
this doc will be help.