From a8c74897fdcc7ec695f501d96daa26aadd76fb00 Mon Sep 17 00:00:00 2001
From: Bogdan Romanyuk <65823030+wrongnull@users.noreply.github.com>
Date: Tue, 21 Feb 2023 23:53:40 +0300
Subject: [PATCH 1/3] implementing checking async generator methods

This PR may fix #81371
---
 Lib/inspect.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Lib/inspect.py b/Lib/inspect.py
index 8bb3a375735af6..0b60bc7dd16fe1 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -410,12 +410,19 @@ def markcoroutinefunction(func):
     func._is_coroutine_marker = _is_coroutine_marker
     return func
 
+_agen_methods = ("__anext__", "aclose", "asend", "athrow")
+
 def iscoroutinefunction(obj):
     """Return true if the object is a coroutine function.
 
     Coroutine functions are normally defined with "async def" syntax, but may
     be marked via markcoroutinefunction.
     """
+    #check if obj is async gen method and returns awaitable
+    is_valid = isbuiltin(obj) or ismethodwrapper(obj)
+    if is_valid and isasyncgen(obj.__self__) and obj.__name__ in _agen_methods:
+        return True
+    #now regular case
     return _has_code_flag(obj, CO_COROUTINE) or _has_coroutine_mark(obj)
 
 def isasyncgenfunction(obj):

From f309fbdf38b07d16da95e114187a935150d4e69e Mon Sep 17 00:00:00 2001
From: "blurb-it[bot]" <43283697+blurb-it[bot]@users.noreply.github.com>
Date: Wed, 22 Feb 2023 02:14:40 +0000
Subject: [PATCH 2/3] =?UTF-8?q?=F0=9F=93=9C=F0=9F=A4=96=20Added=20by=20blu?=
 =?UTF-8?q?rb=5Fit.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../next/Library/2023-02-22-02-14-38.gh-issue-81371.tUo0u1.rst   | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 Misc/NEWS.d/next/Library/2023-02-22-02-14-38.gh-issue-81371.tUo0u1.rst

diff --git a/Misc/NEWS.d/next/Library/2023-02-22-02-14-38.gh-issue-81371.tUo0u1.rst b/Misc/NEWS.d/next/Library/2023-02-22-02-14-38.gh-issue-81371.tUo0u1.rst
new file mode 100644
index 00000000000000..b031986179e76c
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2023-02-22-02-14-38.gh-issue-81371.tUo0u1.rst
@@ -0,0 +1 @@
+This PR may fix the issue 81371

From d16fa1a630cf95c056c327a3401412b89f079cdb Mon Sep 17 00:00:00 2001
From: Bogdan Romanyuk <65823030+wrongnull@users.noreply.github.com>
Date: Wed, 22 Feb 2023 18:42:03 +0300
Subject: [PATCH 3/3] handle one more corner case

well, now I'm not sure if this changes matches your excpectations about the way how stdlib should look like
---
 Lib/inspect.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Lib/inspect.py b/Lib/inspect.py
index 0b60bc7dd16fe1..0acc9789441b1d 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -419,6 +419,7 @@ def iscoroutinefunction(obj):
     be marked via markcoroutinefunction.
     """
     #check if obj is async gen method and returns awaitable
+    obj = functools._unwrap_partial(obj)
     is_valid = isbuiltin(obj) or ismethodwrapper(obj)
     if is_valid and isasyncgen(obj.__self__) and obj.__name__ in _agen_methods:
         return True