convert Javascript object to Python object

[Matej Buzáš]

Hello,

is possible to convert javascript object to Python object? Function Sk.ffi.remapToPy(obj) creates dictionary, but I need object.

For instance:

Let's say I have part of code in Javascript like this:

var Event = function(x,y) {

           this.x = x;

           this.y = y;

       };

and then somewhere in the code I return this:

var obj = new Event(e.x, e.y);

return Sk.ffi.remapToPy(obj);

I expect it creates python object, and after I call 

print(inst.x)

it would return the value of x, but it doesn't work. It works only when I call 

print(inst['x'])

because Sk.ffi.remapToPy converts it to dict.

Thank you

[Björn T]

I didn't work with remaptopy.

I would generate a module and import it like metioned here:http://skulpt.github.io/skulpt/using.html

Sk.externalLibraries = {
    numpy : {
        path: 'http://example.com/static/primeronoo/skulpt/external/numpy/__init__.js',
        dependencies: ['/static/primeronoo/skulpt/external/deps/math.js'],
}
};

[Björn T]

var $builtinmodule = function(name)
{
 var mod = {};
 
 var myalert = function(s) {
  alert(s);
 }
 mod.alert = new Sk.builtin.func(function(a) {
  return myalert(a.v);
 });


 mod.Actor = Sk.misceval.buildClass(mod, function($gbl, $loc) {
  $loc.__init__ = new Sk.builtin.func(function(self) {
   self.x = 0;
  });

  $loc.__getattr__ = new Sk.builtin.func(function (self, name) {
   if (name != null && (Sk.builtin.checkString(name) || typeof name === "string")) {
    var _name = name;
    if (Sk.builtin.checkString(name)) {
     _name = Sk.ffi.remapToJs(name);
    }
    switch (_name) {
     case 'x':
       return self.x;
    }
   }
  });

  $loc.__setattr__ = new Sk.builtin.func(function (self, name, value) {
   if (name != null && (Sk.builtin.checkString(name) || typeof name === "string")) {
    var _name = name;
    if (Sk.builtin.checkString(name)) {
     _name = Sk.ffi.remapToJs(name);
    }
    switch (_name) {
     case 'x':
      self.x = value;
      return;
    }
   }
  });
 
   $loc.getx = new Sk.builtin.func(function(self) {
    return self.x;
   });
  },
  'Actor', []);
 return mod;

This is an example module called Actor that worked for me. I am sorry for the indentation.

[Matej Buzáš]

Thank you very much. Is it possible to create instance of this class directly in Javascript?

I have some problems with that, especially when I try to send parameter to constructor, it invokes Sk.builtin.TypeError.

Thank tou 

 

[Björn T]

I am sorry, I don't know.
You can probably append your python code with initilisation before passing it to skulpt.