From 1b15d577d48f6a7b4e06c73ce4706e27ae77a68a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20van=20Noord?=
 <13665637+DanielNoord@users.noreply.github.com>
Date: Tue, 6 Feb 2024 10:32:30 +0100
Subject: [PATCH 1/2] Use ``is_valid_field`` from 1.x for ``mypy`` plugin

---
 pydantic/v1/mypy.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pydantic/v1/mypy.py b/pydantic/v1/mypy.py
index 1d6d5ae283..ad3dc3d80c 100644
--- a/pydantic/v1/mypy.py
+++ b/pydantic/v1/mypy.py
@@ -65,8 +65,6 @@
 from mypy.util import get_unique_redefinition_name
 from mypy.version import __version__ as mypy_version
 
-from pydantic.utils import is_valid_field
-
 try:
     from mypy.types import TypeVarDef  # type: ignore[attr-defined]
 except ImportError:  # pragma: no cover
@@ -94,6 +92,12 @@ def parse_mypy_version(version: str) -> Tuple[int, ...]:
 __version__ = 2
 
 
+def is_valid_field(name: str) -> bool:
+    if not name.startswith('_'):
+        return True
+    return ROOT_KEY == name
+
+
 def plugin(version: str) -> 'TypingType[Plugin]':
     """
     `version` is the mypy version string

From bd50c622e08db1a6ab256c7f951c554e9d3bf57f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20van=20Noord?=
 <13665637+DanielNoord@users.noreply.github.com>
Date: Wed, 7 Feb 2024 15:32:10 +0100
Subject: [PATCH 2/2] Import ``is_valid_field`` from ``.utils`` instead

---
 pydantic/v1/mypy.py | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/pydantic/v1/mypy.py b/pydantic/v1/mypy.py
index ad3dc3d80c..0262120f1b 100644
--- a/pydantic/v1/mypy.py
+++ b/pydantic/v1/mypy.py
@@ -65,6 +65,8 @@
 from mypy.util import get_unique_redefinition_name
 from mypy.version import __version__ as mypy_version
 
+from .utils import is_valid_field
+
 try:
     from mypy.types import TypeVarDef  # type: ignore[attr-defined]
 except ImportError:  # pragma: no cover
@@ -92,12 +94,6 @@ def parse_mypy_version(version: str) -> Tuple[int, ...]:
 __version__ = 2
 
 
-def is_valid_field(name: str) -> bool:
-    if not name.startswith('_'):
-        return True
-    return ROOT_KEY == name
-
-
 def plugin(version: str) -> 'TypingType[Plugin]':
     """
     `version` is the mypy version string