bpo-24464: Deprecate sqlite3.enable_shared_cache (GH-24008)
diff --git a/Lib/sqlite3/dbapi2.py b/Lib/sqlite3/dbapi2.py
index 991682c..6475f98 100644
--- a/Lib/sqlite3/dbapi2.py
+++ b/Lib/sqlite3/dbapi2.py
@@ -84,6 +84,20 @@ def convert_timestamp(val):
register_adapters_and_converters()
+# bpo-24464: enable_shared_cache was deprecated in Python 3.10. It's
+# scheduled for removal in Python 3.12.
+def enable_shared_cache(enable):
+ from _sqlite3 import enable_shared_cache as _old_enable_shared_cache
+ import warnings
+ msg = (
+ "enable_shared_cache is deprecated and will be removed in Python 3.12. "
+ "Shared cache is strongly discouraged by the SQLite 3 documentation. "
+ "If shared cache must be used, open the database in URI mode using"
+ "the cache=shared query parameter."
+ )
+ warnings.warn(msg, DeprecationWarning, stacklevel=2)
+ return _old_enable_shared_cache
+
# Clean up namespace
del(register_adapters_and_converters)
diff --git a/Lib/sqlite3/test/dbapi.py b/Lib/sqlite3/test/dbapi.py
index 2b85ef9..3131c1e 100644
--- a/Lib/sqlite3/test/dbapi.py
+++ b/Lib/sqlite3/test/dbapi.py
@@ -83,6 +83,13 @@ def CheckNotSupportedError(self):
sqlite.DatabaseError),
"NotSupportedError is not a subclass of DatabaseError")
+ def CheckSharedCacheDeprecated(self):
+ for enable in (True, False):
+ with self.assertWarns(DeprecationWarning) as cm:
+ sqlite.enable_shared_cache(enable)
+ self.assertIn("dbapi.py", cm.filename)
+
+
class ConnectionTests(unittest.TestCase):
def setUp(self):