From 61ad1ea92b1f4df992b0ef1dcc7c781da2413815 Mon Sep 17 00:00:00 2001
From: Tim Graham <timograham@gmail.com>
Date: Mon, 24 Nov 2014 08:36:10 -0500
Subject: [PATCH] Removed django.utils.functional.memoize per deprecation
 timeline.

refs #21351.
---
 django/utils/functional.py | 25 -------------------------
 tests/decorators/tests.py  |  8 +-------
 tests/deprecation/tests.py | 15 ---------------
 3 files changed, 1 insertion(+), 47 deletions(-)

diff --git a/django/utils/functional.py b/django/utils/functional.py
index aa0d6f850a..9e4df4b2f7 100644
--- a/django/utils/functional.py
+++ b/django/utils/functional.py
@@ -2,10 +2,8 @@ import copy
 import operator
 from functools import wraps
 import sys
-import warnings
 
 from django.utils import six
-from django.utils.deprecation import RemovedInDjango19Warning
 from django.utils.six.moves import copyreg
 
 
@@ -18,29 +16,6 @@ def curry(_curried_func, *args, **kwargs):
     return _curried
 
 
-def memoize(func, cache, num_args):
-    """
-    Wrap a function so that results for any argument tuple are stored in
-    'cache'. Note that the args to the function must be usable as dictionary
-    keys.
-
-    Only the first num_args are considered when creating the key.
-    """
-    warnings.warn("memoize wrapper is deprecated and will be removed in "
-                  "Django 1.9. Use django.utils.lru_cache instead.",
-                  RemovedInDjango19Warning, stacklevel=2)
-
-    @wraps(func)
-    def wrapper(*args):
-        mem_args = args[:num_args]
-        if mem_args in cache:
-            return cache[mem_args]
-        result = func(*args)
-        cache[mem_args] = result
-        return result
-    return wrapper
-
-
 class cached_property(object):
     """
     Decorator that converts a method with a single self argument into a
diff --git a/tests/decorators/tests.py b/tests/decorators/tests.py
index 467901eebf..30423e7c80 100644
--- a/tests/decorators/tests.py
+++ b/tests/decorators/tests.py
@@ -1,13 +1,12 @@
 from functools import wraps, update_wrapper
 from unittest import TestCase
-import warnings
 
 from django.contrib.admin.views.decorators import staff_member_required
 from django.contrib.auth.decorators import login_required, permission_required, user_passes_test
 from django.http import HttpResponse, HttpRequest, HttpResponseNotAllowed
 from django.middleware.clickjacking import XFrameOptionsMiddleware
 from django.utils.decorators import method_decorator
-from django.utils.functional import allow_lazy, lazy, memoize
+from django.utils.functional import allow_lazy, lazy
 from django.views.decorators.cache import cache_page, never_cache, cache_control
 from django.views.decorators.clickjacking import xframe_options_deny, xframe_options_sameorigin, xframe_options_exempt
 from django.views.decorators.http import require_http_methods, require_GET, require_POST, require_safe, condition
@@ -63,11 +62,6 @@ full_decorator = compose(
     lazy,
 )
 
-# suppress the deprecation warning of memoize
-with warnings.catch_warnings():
-    warnings.filterwarnings('ignore')
-    fully_decorated = memoize(fully_decorated, {}, 1)
-
 fully_decorated = full_decorator(fully_decorated)
 
 
diff --git a/tests/deprecation/tests.py b/tests/deprecation/tests.py
index 5cf06f0fdf..cae03a8424 100644
--- a/tests/deprecation/tests.py
+++ b/tests/deprecation/tests.py
@@ -9,7 +9,6 @@ from django.test.utils import reset_warning_registry
 from django.utils import six, translation
 from django.utils.deprecation import RenameMethodsBase
 from django.utils.encoding import force_text
-from django.utils.functional import memoize
 
 
 class RenameManagerMethods(RenameMethodsBase):
@@ -214,20 +213,6 @@ class DeprecatedChineseLanguageCodes(SimpleTestCase):
             ])
 
 
-class DeprecatingMemoizeTest(SimpleTestCase):
-    def test_deprecated_memoize(self):
-        """
-        Ensure the correct warning is raised when memoize is used.
-        """
-        with warnings.catch_warnings(record=True) as recorded:
-            warnings.simplefilter('always')
-            memoize(lambda x: x, {}, 1)
-            msg = str(recorded.pop().message)
-            self.assertEqual(msg,
-                'memoize wrapper is deprecated and will be removed in Django '
-                '1.9. Use django.utils.lru_cache instead.')
-
-
 class DeprecatingSimpleTestCaseUrls(unittest.TestCase):
 
     def test_deprecation(self):