From c065982b7abca4c9f69e4059b30ca6ace83bf618 Mon Sep 17 00:00:00 2001
From: Akuli <akuviljanen17@gmail.com>
Date: Mon, 24 Aug 2020 14:03:38 +0300
Subject: [PATCH] support anything with .keys() and __getitem__ in
 dict.__init__ (#4470)

---
 stdlib/2/__builtin__.pyi            | 3 ++-
 stdlib/2and3/_typeshed/__init__.pyi | 7 ++++++-
 stdlib/2and3/builtins.pyi           | 3 ++-
 3 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/stdlib/2/__builtin__.pyi b/stdlib/2/__builtin__.pyi
index ae98b2b0edad..c68a05d7ea7e 100644
--- a/stdlib/2/__builtin__.pyi
+++ b/stdlib/2/__builtin__.pyi
@@ -10,6 +10,7 @@ from _typeshed import (
     OpenBinaryModeWriting,
     OpenTextMode,
     ReadableBuffer,
+    SupportsKeysAndGetItem,
     SupportsWrite,
 )
 from abc import ABCMeta
@@ -1001,7 +1002,7 @@ class dict(MutableMapping[_KT, _VT], Generic[_KT, _VT]):
     @overload
     def __init__(self, **kwargs: _VT) -> None: ...
     @overload
-    def __init__(self, map: Mapping[_KT, _VT], **kwargs: _VT) -> None: ...
+    def __init__(self, map: SupportsKeysAndGetItem[_KT, _VT], **kwargs: _VT) -> None: ...
     @overload
     def __init__(self, iterable: Iterable[Tuple[_KT, _VT]], **kwargs: _VT) -> None: ...
     def __new__(cls: Type[_T1], *args: Any, **kwargs: Any) -> _T1: ...
diff --git a/stdlib/2and3/_typeshed/__init__.pyi b/stdlib/2and3/_typeshed/__init__.pyi
index 1236bbdd9c44..c66e380efe80 100644
--- a/stdlib/2and3/_typeshed/__init__.pyi
+++ b/stdlib/2and3/_typeshed/__init__.pyi
@@ -15,9 +15,10 @@
 import array
 import mmap
 import sys
-from typing import AbstractSet, Container, Protocol, Text, Tuple, TypeVar, Union
+from typing import AbstractSet, Container, Iterable, Protocol, Text, Tuple, TypeVar, Union
 from typing_extensions import Literal
 
+_KT = TypeVar("_KT")
 _KT_co = TypeVar("_KT_co", covariant=True)
 _KT_contra = TypeVar("_KT_contra", contravariant=True)
 _VT = TypeVar("_VT")
@@ -30,6 +31,10 @@ _T_contra = TypeVar("_T_contra", contravariant=True)
 class SupportsItems(Protocol[_KT_co, _VT_co]):
     def items(self) -> AbstractSet[Tuple[_KT_co, _VT_co]]: ...
 
+class SupportsKeysAndGetItem(Protocol[_KT, _VT_co]):
+    def keys(self) -> Iterable[_KT]: ...
+    def __getitem__(self, __k: _KT) -> _VT_co: ...
+
 class SupportsGetItem(Container[_KT_contra], Protocol[_KT_contra, _VT_co]):
     def __getitem__(self, __k: _KT_contra) -> _VT_co: ...
 
diff --git a/stdlib/2and3/builtins.pyi b/stdlib/2and3/builtins.pyi
index ae98b2b0edad..c68a05d7ea7e 100644
--- a/stdlib/2and3/builtins.pyi
+++ b/stdlib/2and3/builtins.pyi
@@ -10,6 +10,7 @@ from _typeshed import (
     OpenBinaryModeWriting,
     OpenTextMode,
     ReadableBuffer,
+    SupportsKeysAndGetItem,
     SupportsWrite,
 )
 from abc import ABCMeta
@@ -1001,7 +1002,7 @@ class dict(MutableMapping[_KT, _VT], Generic[_KT, _VT]):
     @overload
     def __init__(self, **kwargs: _VT) -> None: ...
     @overload
-    def __init__(self, map: Mapping[_KT, _VT], **kwargs: _VT) -> None: ...
+    def __init__(self, map: SupportsKeysAndGetItem[_KT, _VT], **kwargs: _VT) -> None: ...
     @overload
     def __init__(self, iterable: Iterable[Tuple[_KT, _VT]], **kwargs: _VT) -> None: ...
     def __new__(cls: Type[_T1], *args: Any, **kwargs: Any) -> _T1: ...