@handle_response_format
@treeio_login_required
def user_password(request, user_id, response_format='html'):

    profile = get_object_or_404(User, pk=user_id)
    if request.POST:
        if 'cancel' not in request.POST:
            form = PasswordForm(profile.user, request.POST)
            if form.is_valid():
                form.save()
                return HttpResponseRedirect(reverse('core_admin_user_view', args=[profile.id]))
        else:
            return HttpResponseRedirect(reverse('core_admin_user_view', args=[profile.id]))
    else:
        form = PasswordForm(profile.user)

    return render_to_response('core/administration/user_password',
                              {'profile': profile, 'form': form},
                              context_instance=RequestContext(request), response_format=response_format)
User change password form
dataset/ETHPy150Open treeio/treeio/treeio/core/administration/views.py/user_password