Refs #23919 -- Removed django.utils.decorators.available_attrs() usage.

It's only needed to workaround a bug on Python 2.

django/contrib/auth/decorators.py

@@ -5,7 +5,6 @@ from django.conf import settings
 from django.contrib.auth import REDIRECT_FIELD_NAME
 from django.core.exceptions import PermissionDenied
 from django.shortcuts import resolve_url
-from django.utils.decorators import available_attrs
 
 
 def user_passes_test(test_func, login_url=None, redirect_field_name=REDIRECT_FIELD_NAME):
@@ -16,7 +15,7 @@ def user_passes_test(test_func, login_url=None, redirect_field_name=REDIRECT_FIE
     """
 
     def decorator(view_func):
-        @wraps(view_func, assigned=available_attrs(view_func))
+        @wraps(view_func)
         def _wrapped_view(request, *args, **kwargs):
             if test_func(request.user):
                 return view_func(request, *args, **kwargs)

django/core/handlers/exception.py

@@ -8,7 +8,6 @@ from django.core.exceptions import PermissionDenied, SuspiciousOperation
 from django.http import Http404
 from django.http.multipartparser import MultiPartParserError
 from django.urls import get_resolver, get_urlconf
-from django.utils.decorators import available_attrs
 from django.utils.encoding import force_text
 from django.views import debug
 
@@ -28,7 +27,7 @@ def convert_exception_to_response(get_response):
     no middleware leaks an exception and that the next middleware in the stack
     can rely on getting a response instead of an exception.
     """
-    @wraps(get_response, assigned=available_attrs(get_response))
+    @wraps(get_response)
     def inner(request):
         try:
             response = get_response(request)

django/test/utils.py

@@ -22,7 +22,6 @@ from django.db.models.options import Options
 from django.template import Template
 from django.test.signals import setting_changed, template_rendered
 from django.urls import get_script_prefix, set_script_prefix
-from django.utils.decorators import available_attrs
 from django.utils.translation import deactivate
 
 try:
@@ -370,7 +369,7 @@ class TestContextDecorator:
         raise TypeError('Can only decorate subclasses of unittest.TestCase')
 
     def decorate_callable(self, func):
-        @wraps(func, assigned=available_attrs(func))
+        @wraps(func)
         def inner(*args, **kwargs):
             with self as context:
                 if self.kwarg_name:

django/utils/decorators.py

@@ -79,7 +79,7 @@ def method_decorator(decorator, name=''):
     # Don't worry about making _dec look similar to a list/tuple as it's rather
     # meaningless.
     if not hasattr(decorator, '__iter__'):
-        update_wrapper(_dec, decorator, assigned=available_attrs(decorator))
+        update_wrapper(_dec, decorator)
     # Change the name to aid debugging.
     if hasattr(decorator, '__name__'):
         _dec.__name__ = 'method_decorator(%s)' % decorator.__name__
@@ -113,6 +113,7 @@ def decorator_from_middleware(middleware_class):
     return make_middleware_decorator(middleware_class)()
 
 
+# Unused, for backwards compatibility in Django 2.0.
 def available_attrs(fn):
     """
     Return the list of functools-wrappable attributes on a callable.
@@ -127,7 +128,7 @@ def make_middleware_decorator(middleware_class):
         middleware = middleware_class(*m_args, **m_kwargs)
 
         def _decorator(view_func):
-            @wraps(view_func, assigned=available_attrs(view_func))
+            @wraps(view_func)
             def _wrapped_view(request, *args, **kwargs):
                 if hasattr(middleware, 'process_request'):
                     result = middleware.process_request(request)

django/views/decorators/cache.py

@@ -2,9 +2,7 @@ from functools import wraps
 
 from django.middleware.cache import CacheMiddleware
 from django.utils.cache import add_never_cache_headers, patch_cache_control
-from django.utils.decorators import (
+from django.utils.decorators import decorator_from_middleware_with_args
-    available_attrs, decorator_from_middleware_with_args,
-)
 
 
 def cache_page(*args, **kwargs):
@@ -38,7 +36,7 @@ def cache_page(*args, **kwargs):
 
 def cache_control(**kwargs):
     def _cache_controller(viewfunc):
-        @wraps(viewfunc, assigned=available_attrs(viewfunc))
+        @wraps(viewfunc)
         def _cache_controlled(request, *args, **kw):
             response = viewfunc(request, *args, **kw)
             patch_cache_control(response, **kwargs)
@@ -52,7 +50,7 @@ def never_cache(view_func):
     Decorator that adds headers to a response so that it will
     never be cached.
     """
-    @wraps(view_func, assigned=available_attrs(view_func))
+    @wraps(view_func)
     def _wrapped_view_func(request, *args, **kwargs):
         response = view_func(request, *args, **kwargs)
         add_never_cache_headers(response)

django/views/decorators/clickjacking.py

@@ -1,7 +1,5 @@
 from functools import wraps
 
-from django.utils.decorators import available_attrs
-
 
 def xframe_options_deny(view_func):
     """
@@ -20,7 +18,7 @@ def xframe_options_deny(view_func):
         if resp.get('X-Frame-Options') is None:
             resp['X-Frame-Options'] = 'DENY'
         return resp
-    return wraps(view_func, assigned=available_attrs(view_func))(wrapped_view)
+    return wraps(view_func)(wrapped_view)
 
 
 def xframe_options_sameorigin(view_func):
@@ -40,7 +38,7 @@ def xframe_options_sameorigin(view_func):
         if resp.get('X-Frame-Options') is None:
             resp['X-Frame-Options'] = 'SAMEORIGIN'
         return resp
-    return wraps(view_func, assigned=available_attrs(view_func))(wrapped_view)
+    return wraps(view_func)(wrapped_view)
 
 
 def xframe_options_exempt(view_func):
@@ -58,4 +56,4 @@ def xframe_options_exempt(view_func):
         resp = view_func(*args, **kwargs)
         resp.xframe_options_exempt = True
         return resp
-    return wraps(view_func, assigned=available_attrs(view_func))(wrapped_view)
+    return wraps(view_func)(wrapped_view)

django/views/decorators/csrf.py

@@ -1,7 +1,7 @@
 from functools import wraps
 
 from django.middleware.csrf import CsrfViewMiddleware, get_token
-from django.utils.decorators import available_attrs, decorator_from_middleware
+from django.utils.decorators import decorator_from_middleware
 
 csrf_protect = decorator_from_middleware(CsrfViewMiddleware)
 csrf_protect.__name__ = "csrf_protect"
@@ -57,4 +57,4 @@ def csrf_exempt(view_func):
     def wrapped_view(*args, **kwargs):
         return view_func(*args, **kwargs)
     wrapped_view.csrf_exempt = True
-    return wraps(view_func, assigned=available_attrs(view_func))(wrapped_view)
+    return wraps(view_func)(wrapped_view)

django/views/decorators/http.py

@@ -9,7 +9,7 @@ from functools import wraps
 from django.http import HttpResponseNotAllowed
 from django.middleware.http import ConditionalGetMiddleware
 from django.utils.cache import get_conditional_response
-from django.utils.decorators import available_attrs, decorator_from_middleware
+from django.utils.decorators import decorator_from_middleware
 from django.utils.http import http_date, quote_etag
 
 conditional_page = decorator_from_middleware(ConditionalGetMiddleware)
@@ -29,7 +29,7 @@ def require_http_methods(request_method_list):
     Note that request methods should be in uppercase.
     """
     def decorator(func):
-        @wraps(func, assigned=available_attrs(func))
+        @wraps(func)
         def inner(request, *args, **kwargs):
             if request.method not in request_method_list:
                 logger.warning(
@@ -75,7 +75,7 @@ def condition(etag_func=None, last_modified_func=None):
     already have them.
     """
     def decorator(func):
-        @wraps(func, assigned=available_attrs(func))
+        @wraps(func)
         def inner(request, *args, **kwargs):
             # Compute values (if any) for the requested resource.
             def get_last_modified():

django/views/decorators/vary.py

@@ -1,7 +1,6 @@
 from functools import wraps
 
 from django.utils.cache import patch_vary_headers
-from django.utils.decorators import available_attrs
 
 
 def vary_on_headers(*headers):
@@ -16,7 +15,7 @@ def vary_on_headers(*headers):
     Note that the header names are not case-sensitive.
     """
     def decorator(func):
-        @wraps(func, assigned=available_attrs(func))
+        @wraps(func)
         def inner_func(*args, **kwargs):
             response = func(*args, **kwargs)
             patch_vary_headers(response, headers)
@@ -34,7 +33,7 @@ def vary_on_cookie(func):
         def index(request):
             ...
     """
-    @wraps(func, assigned=available_attrs(func))
+    @wraps(func)
     def inner_func(*args, **kwargs):
         response = func(*args, **kwargs)
         patch_vary_headers(response, ('Cookie',))