[Answered ]-Django throws error 'WSGIRequest' object has no attribute 'push'

remove the request when return .. It’s should be

return render_to_response('rango/index.html',context_dict)

or use render instead

return render(request, 'rango/index.html', context_dict)

Note:

render() is the same as a call to render_to_response() with a context_instance argument that that forces the use of a RequestContext.