Enable pyright for all Python 3 stubs (#5597)

* pyright: disable reportUnknownParameterType

Unknown parameter types are preferred over Any annotations for
incomplete stubs. Especially larger stubs are expected to be
incomplete for some time and it would be a shame to lose the
other pyright warnings for those stubs.

* Also disable reportUnknownVariableType

Fix problems with tkinter

* Disable reportUnknownMemberType

Fix pyright problems

stdlib/tkinter/__init__.pyi

@@ -164,10 +164,11 @@ class EventType(str, Enum):
     VirtualEvent: str = ...
     Visibility: str = ...
 
+_W = TypeVar("_W", bound="Misc")
 # Events considered covariant because you should never assign to event.widget.
-_W = TypeVar("_W", covariant=True, bound="Misc")
+_W_co = TypeVar("_W_co", covariant=True, bound="Misc")
 
-class Event(Generic[_W]):
+class Event(Generic[_W_co]):
     serial: int
     num: int
     focus: bool
@@ -185,7 +186,7 @@ class Event(Generic[_W]):
     keysym: str
     keysym_num: int
     type: EventType
-    widget: _W
+    widget: _W_co
     delta: int
 
 def NoDefaultRoot(): ...

stdlib/tkinter/font.pyi

@@ -1,6 +1,6 @@
 import sys
 import tkinter
-from typing import Any, List, Optional, Tuple, TypeVar, Union, overload
+from typing import Any, Optional, Tuple, Union, overload
 from typing_extensions import Literal, TypedDict
 
 NORMAL: Literal["normal"]

stdlib/tkinter/scrolledtext.pyi

@@ -1,4 +1,4 @@
-from tkinter import Frame, Grid, Misc, Pack, Place, Scrollbar, Text
+from tkinter import Frame, Misc, Scrollbar, Text
 from typing import Any, Optional
 
 # The methods from Pack, Place, and Grid are dynamically added over the parent's impls

stdlib/tkinter/ttk.pyi

@@ -2,7 +2,7 @@ import _tkinter
 import sys
 import tkinter
 from tkinter.font import _FontDescription
-from typing import Any, Callable, Dict, List, Optional, Tuple, Union, overload
+from typing import Any, Callable, Dict, Optional, Tuple, Union, overload
 from typing_extensions import Literal, TypedDict
 
 def tclobjs_to_py(adict): ...