urls_belcanto.py:

    # working by API
    (r'^sk_api.html$', 'main.catalogs.sk_api'),

---------

# working by API
def sk_api( request ):
    #my_spis = { "sknom": sknom }
    my_spis = {  }
    my_spis["sknom"] = "val_sknom"
    # 
    return render(request, "sk_testapi.html", my_spis )

----------

sk_testapi.html:

sk_testapi <br/>
{% block main %}
<script> console.log("sk test API") </script>
sknom = {{sknom}}. <br/>
{% endblock main %}

--------

result:

sk_testapi
sknom = val_sknom.