code: def session(request):
      
  
      if request.user.id is None:  # Google Bot
          return render_json(request, {
              'error': _('There is no user available to create a session.'),
              'error_type': 'user_undefined'
          }, status=400, template='user_json.html')
  
      if request.method == 'GET':
          return render_json(
              request,
              Session.objects.get_current_session(),
              template='user_session.html', help_text=session.__doc__)
      elif request.method == 'POST':
          current_session = Session.objects.get_current_session()
          if current_session is None:
              return HttpResponseBadRequest("there is no current session to modify")
          data = json_body(request.body.decode("utf-8"))
          locale = data.get('locale', None)
          time_zone = data.get('time_zone', None)
          display_width = data.get('display_width', None)
          display_height = data.get('display_height', None)
          if locale:
              current_session.locale = locale
          if time_zone:
              current_session.time_zone = TimeZone.objects.from_content(time_zone)
          if display_width:
              current_session.display_width = display_width
          if display_height:
              current_session.display_height = display_height
          current_session.save()
          return HttpResponse('ok', status=202)
      else:
          return HttpResponseBadRequest("method %s is not allowed".format(request.method))
docs: Get the information about the current session or modify the current session.
  
      GET parameters:
        html
          turn on the HTML version of the API
  
      POST parameters:
        locale:
          client's locale
        time_zone:
          client's time zone
        display_width:
          width of the client's display
        display_height
          height of the client's display