Make peewee stubs compatible with peewee 3.15.4 (#9176)

stdlib/typing.pyi

@@ -618,6 +618,8 @@ class MutableMapping(Mapping[_KT, _VT], Generic[_KT, _VT]):
     # -- os._Environ.__ior__
     # -- collections.UserDict.__ior__
     # -- collections.ChainMap.__ior__
+    # -- peewee.attrdict.__add__
+    # -- peewee.attrdict.__iadd__
     # -- weakref.WeakValueDictionary.__ior__
     # -- weakref.WeakKeyDictionary.__ior__
     @overload

stubs/peewee/peewee.pyi

@@ -1,9 +1,9 @@
 import itertools
 import logging
 import threading
-from _typeshed import Incomplete
-from collections.abc import Generator
-from typing import NamedTuple
+from _typeshed import Incomplete, Self, SupportsKeysAndGetItem
+from collections.abc import Generator, Iterable
+from typing import ClassVar, NamedTuple, TypeVar
 
 class NullHandler(logging.Handler):
     def emit(self, record) -> None: ...
@@ -15,15 +15,19 @@ basestring = str
 long = int
 izip_longest = itertools.zip_longest
 
-class attrdict(dict[Incomplete, Incomplete]):
-    def __getattr__(self, attr): ...
-    def __setattr__(self, attr, value) -> None: ...
-    def __iadd__(self, rhs): ...
-    def __add__(self, rhs): ...
+_VT = TypeVar("_VT")
+
+class attrdict(dict[str, _VT]):
+    def __getattr__(self, attr: str) -> _VT: ...
+    def __setattr__(self, attr: str, value: _VT) -> None: ...
+    # calls dict.update()
+    def __iadd__(self: Self, rhs: SupportsKeysAndGetItem[str, _VT] | Iterable[tuple[str, _VT]]) -> Self: ...
+    def __add__(self, rhs: SupportsKeysAndGetItem[str, _VT] | Iterable[tuple[str, _VT]]) -> attrdict[_VT]: ...
 
 OP: Incomplete
 DJANGO_MAP: Incomplete
 JOIN: Incomplete
+PREFETCH_TYPE: attrdict[int]
 
 def chunked(it, n) -> Generator[Incomplete, None, None]: ...
 
@@ -47,6 +51,8 @@ class DatabaseProxy(Proxy):
     def manual_commit(self): ...
     def transaction(self, *args, **kwargs): ...
     def savepoint(self): ...
+    @property
+    def Model(self) -> type[Model]: ...
 
 class ModelDescriptor: ...
 
@@ -369,6 +375,7 @@ class SQL(ColumnBase):
 def Check(constraint, name: Incomplete | None = ...): ...
 
 class Function(ColumnBase):
+    no_coerce_functions: ClassVar[set[str]]
     name: Incomplete
     arguments: Incomplete
     def __init__(self, name, arguments, coerce: bool = ..., python_value: Incomplete | None = ...) -> None: ...
@@ -820,6 +827,8 @@ class Database(_callable_context_manager):
     def bind(self, models, bind_refs: bool = ..., bind_backrefs: bool = ...) -> None: ...
     def bind_ctx(self, models, bind_refs: bool = ..., bind_backrefs: bool = ...): ...
     def get_noop_select(self, ctx): ...
+    @property
+    def Model(self) -> type[Model]: ...
 
 class SqliteDatabase(Database):
     field_types: Incomplete