To build multiple submit buttons in a Python Django form, we can render the buttons conditionally.
For instance, we write
if 'newsletter_sub' in request.POST:
# do subscribe
elif 'newsletter_unsub' in request.POST:
# do unsubscribe
to render one submit button if the newletter_sub key is in request.POST.
And we render another submit button if the newsletter_unsub key is in request.POST.