Replaced @cached_property with class attributes where possible.

django/contrib/gis/db/backends/postgis/operations.py

@@ -134,10 +134,7 @@ class PostGISOperations(BaseSpatialOperations, DatabaseOperations):
 
     unsupported_functions = set()
 
-    @cached_property
-    def select(self):
-        return '%s::bytea'
-
+    select = '%s::bytea'
     select_extent = None
 
     def __init__(self, connection):

django/contrib/gis/db/backends/spatialite/operations.py

@@ -68,17 +68,15 @@ class SpatiaLiteOperations(BaseSpatialOperations, DatabaseOperations):
     def select(self):
         return 'CAST (AsEWKB(%s) AS BLOB)' if self.spatial_version >= (4, 3, 0) else 'AsText(%s)'
 
-    @cached_property
-    def function_names(self):
-        return {
-            'Length': 'ST_Length',
-            'LineLocatePoint': 'ST_Line_Locate_Point',
-            'NumPoints': 'ST_NPoints',
-            'Reverse': 'ST_Reverse',
-            'Scale': 'ScaleCoords',
-            'Translate': 'ST_Translate',
-            'Union': 'ST_Union',
-        }
+    function_names = {
+        'Length': 'ST_Length',
+        'LineLocatePoint': 'ST_Line_Locate_Point',
+        'NumPoints': 'ST_NPoints',
+        'Reverse': 'ST_Reverse',
+        'Scale': 'ScaleCoords',
+        'Translate': 'ST_Translate',
+        'Union': 'ST_Union',
+    }
 
     @cached_property
     def unsupported_functions(self):

django/db/backends/sqlite3/features.py

@@ -31,25 +31,13 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     supports_temporal_subtraction = True
     ignores_table_name_case = True
     supports_cast_with_precision = False
-
-    @cached_property
-    def uses_savepoints(self):
-        return Database.sqlite_version_info >= (3, 6, 8)
-
-    @cached_property
-    def supports_index_column_ordering(self):
-        return Database.sqlite_version_info >= (3, 3, 0)
-
-    @cached_property
-    def can_release_savepoints(self):
-        return self.uses_savepoints
-
-    @cached_property
-    def can_share_in_memory_db(self):
-        return (
-            Database.__name__ == 'sqlite3.dbapi2' and
-            Database.sqlite_version_info >= (3, 7, 13)
-        )
+    uses_savepoints = Database.sqlite_version_info >= (3, 6, 8)
+    supports_index_column_ordering = Database.sqlite_version_info >= (3, 3, 0)
+    can_release_savepoints = uses_savepoints
+    can_share_in_memory_db = (
+        Database.__name__ == 'sqlite3.dbapi2' and
+        Database.sqlite_version_info >= (3, 7, 13)
+    )
 
     @cached_property
     def supports_stddev(self):