kpsul/journaldecaisse/urls.py

from django.urls import path
from django.conf.urls import url

from . import views

app_name = 'journaldecaisse'
urlpatterns = [
    path('', views.index, name='index'),
    path('vente.html', views.vente, name='vente'),
    url(r'^ajax/iterate_options/$', views.iterate_options, name='iterate_options'),
]