pstats: fix stream type, add class var (#3862)

Co-authored-by: hauntsaninja <>

Author: hauntsaninja

stdlib/2and3/pstats.pyi

@@ -2,7 +2,7 @@ from profile import Profile
 from cProfile import Profile as _cProfile
 import os
 import sys
-from typing import Any, Dict, IO, Iterable, List, Text, Tuple, TypeVar, Union, overload
+from typing import Any, Dict, IO, Iterable, List, Optional, Text, Tuple, TypeVar, Union, overload
 
 _Selector = Union[str, float, int]
 _T = TypeVar('_T', bound=Stats)
@@ -12,9 +12,10 @@ else:
     _Path = Union[bytes, Text]
 
 class Stats:
+    sort_arg_dict_default: Dict[str, Tuple[Any, str]]
     def __init__(self: _T, __arg: Union[None, str, Text, Profile, _cProfile] = ...,
                  *args: Union[None, str, Text, Profile, _cProfile, _T],
-                 stream: IO[Any] = ...) -> None: ...
+                 stream: Optional[IO[Any]] = ...) -> None: ...
     def init(self, arg: Union[None, str, Text, Profile, _cProfile]) -> None: ...
     def load_stats(self, arg: Union[None, str, Text, Profile, _cProfile]) -> None: ...
     def get_top_level_stats(self) -> None: ...

tests/stubtest_whitelists/py3_common.txt

@@ -596,7 +596,6 @@ posix.uname_result._replace
 posix.waitid_result._asdict
 posix.waitid_result._make
 posix.waitid_result._replace
-pstats.Stats.__init__
 pwd.getpwnam
 pydoc.HTMLDoc.docdata
 pydoc.HTMLDoc.docproperty