Drop support for EOL Python <= 3.6

.github/workflows/test.yml

@@ -10,7 +10,7 @@ jobs:
       fail-fast: false
       max-parallel: 5
       matrix:
-        python-version: ['3.6', '3.7', '3.8', '3.9', '3.10']
+        python-version: ['3.7', '3.8', '3.9', '3.10']
         django-version: ['2.2', '3.1', '3.2', 'main']
 
     steps:

README.rst

@@ -54,7 +54,7 @@ soon as near-full coverage is reached.
 
 Compatibility
 =============
-Currently, django-newsletter officially supports Django 2.2.x LTS, 3.1.x and 3.2.x and Python 3.6 through 3.9.
+Currently, django-newsletter officially supports Django 2.2.x LTS, 3.1.x and 3.2.x and Python 3.7 through 3.10.
 
 Requirements
 ============

setup.py

@@ -68,11 +68,11 @@
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
         'Programming Language :: Python :: 3.10',
+        'Programming Language :: Python :: 3 :: Only',
         'Topic :: Utilities'
     ],
 )

tests/test_mailing.py

@@ -1,6 +1,5 @@
 import itertools
 import os
-import sys
 
 from unittest import mock
 import unittest
@@ -259,8 +258,6 @@ def test_delayedbatchsumbmission(self):
 
         sleep_mock.assert_called_with(0.02)
 
-    @unittest.skipIf(sys.version_info < (3,6), 
-                        reason="assert_called_once added in Python 3.6")
     def test_management_command(self):
         """ Test submission through management command. """
 
@@ -454,7 +451,7 @@ class TemplateOverridesTestCase(MailingTestCase, AllEmailsTestsMixin):
 
     def get_newsletter_kwargs(self):
         """
-        Update keyword arguments for instanciating the newsletter
+        Update keyword arguments for instantiating the newsletter
         so that slug corresponds to one for which template overrides exists
         and make sure e-mails will be sent with text and HTML versions.
         """

tox.ini

@@ -1,7 +1,7 @@
 [tox]
 envlist =
-    py{36,37,38,39}-dj{22,31}
-    py{36,37,38,39}-dj32
+    py{37,38,39}-dj{22,31}
+    py{37,38,39}-dj32
     py{38,39,310}-djmain
 
 [testenv]
@@ -14,7 +14,6 @@ deps =
     pytz
     webtest
     django-webtest
-    mock
     dj22: Django>=2.2,<3.0
     dj31: Django>=3.1,<3.2
     dj32: Django>=3.2,<3.3
@@ -32,7 +31,6 @@ setenv =
 
 [gh-actions]
 python =
-    3.6: py36
     3.7: py37
     3.8: py38
     3.9: py39