From f01efc85a299bc65f3be6a03c610441166bf8e88 Mon Sep 17 00:00:00 2001
From: Alex Waygood <Alex.Waygood@Gmail.com>
Date: Mon, 14 Feb 2022 22:13:28 +0000
Subject: [PATCH 1/2] Add `@final` to several stdlib classes that cannot be
 subclassed at runtime

---
 stdlib/_json.pyi          | 3 +++
 stdlib/_tkinter.pyi       | 1 +
 stdlib/hashlib.pyi        | 2 ++
 stdlib/sqlite3/dbapi2.pyi | 2 ++
 stdlib/ssl.pyi            | 4 +++-
 stdlib/unicodedata.pyi    | 2 ++
 6 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/stdlib/_json.pyi b/stdlib/_json.pyi
index 7395288afdbc..36b0ed679502 100644
--- a/stdlib/_json.pyi
+++ b/stdlib/_json.pyi
@@ -1,5 +1,7 @@
 from typing import Any, Callable
+from typing_extensions import final
 
+@final
 class make_encoder:
     sort_keys: Any
     skipkeys: Any
@@ -23,6 +25,7 @@ class make_encoder:
     ) -> None: ...
     def __call__(self, obj: object, _current_indent_level: int) -> Any: ...
 
+@final
 class make_scanner:
     object_hook: Any
     object_pairs_hook: Any
diff --git a/stdlib/_tkinter.pyi b/stdlib/_tkinter.pyi
index 7c0ccec1d7de..382b7f52f382 100644
--- a/stdlib/_tkinter.pyi
+++ b/stdlib/_tkinter.pyi
@@ -101,6 +101,7 @@ WRITABLE: Literal[4]
 TCL_VERSION: str
 TK_VERSION: str
 
+@final
 class TkttType:
     def deletetimerhandler(self): ...
 
diff --git a/stdlib/hashlib.pyi b/stdlib/hashlib.pyi
index fad3c5aad457..246a7fed7afe 100644
--- a/stdlib/hashlib.pyi
+++ b/stdlib/hashlib.pyi
@@ -1,6 +1,7 @@
 import sys
 from _typeshed import ReadableBuffer, Self
 from typing import AbstractSet
+from typing_extensions import final
 
 class _Hash:
     @property
@@ -77,6 +78,7 @@ def scrypt(
     dklen: int = ...,
 ) -> bytes: ...
 
+@final
 class _BlakeHash(_Hash):
     MAX_DIGEST_SIZE: int
     MAX_KEY_SIZE: int
diff --git a/stdlib/sqlite3/dbapi2.pyi b/stdlib/sqlite3/dbapi2.pyi
index 820b40baa47b..7e0d2e6a0d33 100644
--- a/stdlib/sqlite3/dbapi2.pyi
+++ b/stdlib/sqlite3/dbapi2.pyi
@@ -2,6 +2,7 @@ import sys
 from _typeshed import Self, StrOrBytesPath
 from datetime import date, datetime, time
 from typing import Any, Callable, Generator, Iterable, Iterator, Protocol, TypeVar
+from typing_extensions import final
 
 _T = TypeVar("_T")
 
@@ -223,6 +224,7 @@ class OperationalError(DatabaseError): ...
 
 OptimizedUnicode = str
 
+@final
 class PrepareProtocol:
     def __init__(self, *args: Any, **kwargs: Any) -> None: ...
 
diff --git a/stdlib/ssl.pyi b/stdlib/ssl.pyi
index 28f616eceabf..fb9acb011e4c 100644
--- a/stdlib/ssl.pyi
+++ b/stdlib/ssl.pyi
@@ -3,7 +3,7 @@ import socket
 import sys
 from _typeshed import ReadableBuffer, Self, StrOrBytesPath, WriteableBuffer
 from typing import Any, Callable, ClassVar, Iterable, NamedTuple, Optional, Union, overload
-from typing_extensions import Literal, TypedDict
+from typing_extensions import Literal, TypedDict, final
 
 _PCTRTT = tuple[tuple[str, str], ...]
 _PCTRTTT = tuple[_PCTRTT, ...]
@@ -471,6 +471,7 @@ class SSLObject:
     if sys.version_info >= (3, 8):
         def verify_client_post_handshake(self) -> None: ...
 
+@final
 class MemoryBIO:
     pending: int
     eof: bool
@@ -478,6 +479,7 @@ class MemoryBIO:
     def write(self, __buf: bytes) -> int: ...
     def write_eof(self) -> None: ...
 
+@final
 class SSLSession:
     id: bytes
     time: int
diff --git a/stdlib/unicodedata.pyi b/stdlib/unicodedata.pyi
index ead25ba4062c..ba9f3bda27b5 100644
--- a/stdlib/unicodedata.pyi
+++ b/stdlib/unicodedata.pyi
@@ -1,5 +1,6 @@
 import sys
 from typing import Any, TypeVar
+from typing_extensions import final
 
 ucd_3_2_0: UCD
 ucnhash_CAPI: Any
@@ -24,6 +25,7 @@ def name(__chr: str, __default: _T = ...) -> str | _T: ...
 def normalize(__form: str, __unistr: str) -> str: ...
 def numeric(__chr: str, __default: _T = ...) -> float | _T: ...
 
+@final
 class UCD:
     # The methods below are constructed from the same array in C
     # (unicodedata_functions) and hence identical to the methods above.

From b216f5258865a55efa0714c28a13fa2d68c33b5c Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Mon, 14 Feb 2022 22:19:00 +0000
Subject: [PATCH 2/2] [pre-commit.ci] auto fixes from pre-commit.com hooks

---
 stdlib/hashlib.pyi     | 1 -
 stdlib/unicodedata.pyi | 1 -
 2 files changed, 2 deletions(-)

diff --git a/stdlib/hashlib.pyi b/stdlib/hashlib.pyi
index 246a7fed7afe..3b8fbeb0bf3e 100644
--- a/stdlib/hashlib.pyi
+++ b/stdlib/hashlib.pyi
@@ -77,7 +77,6 @@ def scrypt(
     maxmem: int = ...,
     dklen: int = ...,
 ) -> bytes: ...
-
 @final
 class _BlakeHash(_Hash):
     MAX_DIGEST_SIZE: int
diff --git a/stdlib/unicodedata.pyi b/stdlib/unicodedata.pyi
index ba9f3bda27b5..dca88caa7c1f 100644
--- a/stdlib/unicodedata.pyi
+++ b/stdlib/unicodedata.pyi
@@ -24,7 +24,6 @@ def mirrored(__chr: str) -> int: ...
 def name(__chr: str, __default: _T = ...) -> str | _T: ...
 def normalize(__form: str, __unistr: str) -> str: ...
 def numeric(__chr: str, __default: _T = ...) -> float | _T: ...
-
 @final
 class UCD:
     # The methods below are constructed from the same array in C