From a6a744a9d099d0a956ea073fa1d11a961a5d7092 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Oleg=20H=C3=B6fling?= <hoefling@users.noreply.github.com>
Date: Sat, 24 Jul 2021 14:59:33 +0200
Subject: [PATCH] Add type hint for `linecache.cache` dict (#5805)

---
 stdlib/linecache.pyi | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/stdlib/linecache.pyi b/stdlib/linecache.pyi
index 73c773876..39b9a25b8 100644
--- a/stdlib/linecache.pyi
+++ b/stdlib/linecache.pyi
@@ -1,10 +1,16 @@
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, List, Protocol, Tuple
 
 _ModuleGlobals = Dict[str, Any]
+_ModuleMetadata = Tuple[int, float, List[str], str]
 
-def getline(filename: str, lineno: int, module_globals: Optional[_ModuleGlobals] = ...) -> str: ...
+class _SourceLoader(Protocol):
+    def __call__(self) -> str | None: ...
+
+cache: Dict[str, _SourceLoader | _ModuleMetadata]
+
+def getline(filename: str, lineno: int, module_globals: _ModuleGlobals | None = ...) -> str: ...
 def clearcache() -> None: ...
-def getlines(filename: str, module_globals: Optional[_ModuleGlobals] = ...) -> List[str]: ...
-def checkcache(filename: Optional[str] = ...) -> None: ...
-def updatecache(filename: str, module_globals: Optional[_ModuleGlobals] = ...) -> List[str]: ...
+def getlines(filename: str, module_globals: _ModuleGlobals | None = ...) -> List[str]: ...
+def checkcache(filename: str | None = ...) -> None: ...
+def updatecache(filename: str, module_globals: _ModuleGlobals | None = ...) -> List[str]: ...
 def lazycache(filename: str, module_globals: _ModuleGlobals) -> bool: ...