Data Integration Between JS and Python in Django with Ajax

It seems like your example is missing some important bits, like a Django view handler that returns a JSON response. The URL that you're using in the ajax call ("/docflow/projects/modules_2") - is that mapped to a view?

A quick example would be something like this:

# urls.py
from django.conf.urls import patterns, url
from . import views

urlpatterns = patterns('',
    url(r'^/docflow/projects/modules_2$', views.docflow_projects_modules_2_view),
)

# views.py
import json
from suds.client import Client as Client
from django.http.response import HttpResponse


def get_result_by_code(promocode):
    url = "http://service.emobile.az:8080/ws-loyalty-program/cp/loyaltyprogram.wsdl"
    client = Client(url)
    result = client.service.loyaltyProgramCalculate(
        amount=1000,
        authKey='TEST6aede35740f2b9d2248b0ab6b878',
        identicalCode=promocode,
        terminalCode=2166)
    if str(result[2]) == "SUCCESS":
        status = 1
    else:
        status = 0
    return status


def docflow_projects_modules_2_view(request):
    data = json.loads(request.body)
    status = get_result_by_code(data['promocode'])

    result = dict(
        status=status,
        message='Put a message here....'
    )

    return HttpResponse(json.dumps(result), mimetype='application/json')

And then in terms of the javascript/frontend, that should look something like this:

function get_result_by_code() {
  var promocode = $('#bakcelPromo').val();
  $.ajax({
    type: "GET",
    url: "/docflow/projects/modules_2",
    dataType: "json",
    async: true,
    data: {"promocode": promocode},
    success: function (response) {
      if (response.status === 1) {
        // handle success
      } else {
        // handle error
      }
      $('#output').html(response.message);
    },
    error: function () {
       alert('There was an error communicating with the server.');
    }
  });
}

I have to write in answer section, as I'm too low on point to make comments yet.

What does it mean "I know this function is wrong and need to fix". Doesn't it return any results?

Try to add error function callback:

$.ajax({
    ...
    error: function (request, status, error) {
        alert(request.responseText);
    }
});

Alternatively check what is in json parameter in success function (log it with console.log or with alert. Also check what is in browser console. Is there any error message?