You should just change you action url in your template:
<form action="{% url 'submit' %} "method='post'>
On the note of url namespaces…
In order to be able to call urls using home namespace you should have in your main urls.py file line something like:
for django 1.x:
url(r'^', include('home.urls', namespace="home")),
for django 2.x and 3.x
path('', include(('home.urls', 'home'), namespace="home"))