RemovedInDjango20Warning: django.core.urlresolvers -> django.urls

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All versions of django-smart-selects prior to version 1.2.8 are vulnerable to an XSS attack as detailed in issue 171. As a result, all previous versions have been removed from PyPI to prevent users from installing insecure versions. All users are urged to upgrade as soon as possible.

Checklist

^{^{Put an x in the bracket when you have completed each task, like this: [x]}}

[x] This issue is not about installing previous versions of django-smart-selects older than 1.2.8. I understand that previous versions are insecure and will not receive any support whatsoever.
[x] I have verified that that issue exists against the master branch of django-smart-selects.
[x] I have searched for similar issues in both open and closed tickets and cannot find a duplicate.
[x] I have debugged the issue to the smart_selects app.
[x] I have reduced the issue to the simplest possible case.
[x] I have included all relevant sections of models.py, forms.py, and views.py with problems.
[x] I have used GitHub Flavored Markdown to style all of my posted code.

Steps to reproduce

Set up the django-smart-selects test_app.
Run python -Wd manage.py test.
Look at stdout.

Actual behavior

Note: This is a subset of the warnings that are produced. I'll be opening other issues/PRs for the other deprecation warnings.

/path/to/django-smart_selects/widgets.py:7: RemovedInDjango20Warning: Importing from django.core.urlresolvers is deprecated in favor of django.urls.
  from django.core.urlresolvers import reverse

/path/to/django-smart-selects/test_app/tests.py:1: RemovedInDjango20Warning: Importing from django.core.urlresolvers is deprecated in favor of django.urls.
  from django.core.urlresolvers import reverse

smart_selects/widgets.py imports:

import json

import django

from django.apps import apps
from django.conf import settings
from django.core.urlresolvers import reverse  # THIS SHOULD BE `from django.urls import reverse`
from django.forms.widgets import Select, SelectMultiple
from django.utils.safestring import mark_safe
from django.utils.encoding import force_text
from django.utils.html import escape

from smart_selects.utils import unicode_sorter, sort_results

Source (this is the latest commit on master)

test_app/tests.py imports:

from django.core.urlresolvers import reverse  # THIS SHOULD BE `from django.urls import reverse`
from django.test import TestCase, RequestFactory
from .models import Book, Country, Location, Student
from smart_selects.views import filterchain, filterchain_all, is_m2m

Source

Reference in Django 1.10 release notes (4th item down)

Expected behavior

Shouldn't see any warnings.

jazzband / django-smart-selects