Add __slots__ to third-party packages using stubdefaulter (python#14619)

Author: JelleZijlstra

pyproject.toml

@@ -177,6 +177,7 @@ ignore = [
     "TRY003", # Avoid specifying long messages outside the exception class
     # Slower and more verbose https://github.com/astral-sh/ruff/issues/7871
     "UP038", # Use `X | Y` in `isinstance` call instead of `(X, Y)`
+    "PLC0205", # Sometimes __slots__ really is a string at runtime
     ###
     # False-positives, but already checked by type-checkers
     ###

stubs/PyMySQL/pymysql/protocol.pyi

@@ -11,6 +11,7 @@ UNSIGNED_INT64_COLUMN: Final[int]
 def dump_packet(data) -> None: ...
 
 class MysqlPacket:
+    __slots__ = ("_position", "_data")
     def __init__(self, data, encoding) -> None: ...
     def get_all_data(self): ...
     def read(self, size): ...

stubs/PyYAML/yaml/__init__.pyi

@@ -428,6 +428,7 @@ class YAMLObjectMetaclass(type):
     def __init__(cls, name, bases, kwds) -> None: ...
 
 class YAMLObject(metaclass=YAMLObjectMetaclass):
+    __slots__ = ()
     yaml_loader: Any
     yaml_dumper: Any
     yaml_tag: Any

stubs/WebOb/webob/cookies.pyi

@@ -60,6 +60,7 @@ class Cookie(dict[bytes, Morsel]):
     def __str__(self, full: bool = True) -> str: ...
 
 class Morsel(dict[bytes, bytes | bool | None]):
+    __slots__ = ("name", "value")
     name: bytes
     value: bytes
     def __init__(self, name: str | bytes, value: str | bytes) -> None: ...

stubs/aiofiles/aiofiles/base.pyi

@@ -20,6 +20,7 @@ class AsyncIndirectBase(AsyncBase[_T]):
     ) -> None: ...
 
 class AiofilesContextManager(Awaitable[_V_co], AbstractAsyncContextManager[_V_co]):
+    __slots__ = ("_coro", "_obj")
     def __init__(self, coro: Awaitable[_V_co]) -> None: ...
     def __await__(self) -> Generator[Any, Any, _V_co]: ...
     async def __aenter__(self) -> _V_co: ...

stubs/antlr4-python3-runtime/antlr4/BufferedTokenStream.pyi

@@ -8,6 +8,7 @@ Lexer: Incomplete
 class TokenStream: ...
 
 class BufferedTokenStream(TokenStream):
+    __slots__ = ("tokenSource", "tokens", "index", "fetchedEOF")
     tokenSource: Incomplete
     tokens: Incomplete
     index: int

stubs/antlr4-python3-runtime/antlr4/CommonTokenFactory.pyi

@@ -5,6 +5,7 @@ from antlr4.Token import CommonToken as CommonToken
 class TokenFactory: ...
 
 class CommonTokenFactory(TokenFactory):
+    __slots__ = "copyText"
     DEFAULT: Incomplete
     copyText: Incomplete
     def __init__(self, copyText: bool = False) -> None: ...

stubs/antlr4-python3-runtime/antlr4/CommonTokenStream.pyi

@@ -5,6 +5,7 @@ from antlr4.Lexer import Lexer as Lexer
 from antlr4.Token import Token as Token
 
 class CommonTokenStream(BufferedTokenStream):
+    __slots__ = "channel"
     channel: Incomplete
     def __init__(self, lexer: Lexer, channel: int = 0) -> None: ...
     def adjustSeekIndex(self, i: int) -> int: ...

stubs/antlr4-python3-runtime/antlr4/FileStream.pyi

@@ -3,6 +3,7 @@ from _typeshed import Incomplete
 from antlr4.InputStream import InputStream as InputStream
 
 class FileStream(InputStream):
+    __slots__ = "fileName"
     fileName: Incomplete
     def __init__(self, fileName: str, encoding: str = "ascii", errors: str = "strict") -> None: ...
     def readDataFrom(self, fileName: str, encoding: str, errors: str = "strict"): ...

stubs/antlr4-python3-runtime/antlr4/InputStream.pyi

@@ -3,6 +3,7 @@ from _typeshed import Incomplete
 from antlr4.Token import Token as Token
 
 class InputStream:
+    __slots__ = ("name", "strdata", "_index", "data", "_size")
     name: str
     strdata: Incomplete
     data: Incomplete