#!/usr/bin/env python3

import django.template
import django.template.engine

def _main():
    e = django.template.engine.Engine()

    body = """\
aa {{ test_token }} cc
"""

    t = django.template.Template(body, engine=e)

    context = {
        'test_token': 'bb',
    }

    c = django.template.Context(context)
    r = t.render(c)

    print(r)


_main()

$ ./test_render.py 
aa bb cc