From 69a09adef655b221624780a1ecea36c27803cea9 Mon Sep 17 00:00:00 2001
From: Pedro Enrique Agurto Castillo
 <130622718+peteragurto@users.noreply.github.com>
Date: Fri, 7 Nov 2025 07:52:27 -0500
Subject: [PATCH] fix(langgraph): export REMOVE_ALL_MESSAGES in __all__ to fix
 linting (#6375)
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

`REMOVE_ALL_MESSAGES` is a public constant used with `RemoveMessage` to
clear all messages from the state:

```python
from langchain_core.messages import RemoveMessage
from langgraph.graph.message import REMOVE_ALL_MESSAGES

# Clear all messages
[RemoveMessage(id=REMOVE_ALL_MESSAGES)]
```

However, it is not exported in __all__, causing:

Linting errors in IDEs (PyCharm)
no-member warnings from Pylint
Confusion for users

This PR:

Adds REMOVE_ALL_MESSAGES to __all__
Adds inline docstring with usage example

No runtime behavior changes — only improves IDE support and API clarity.

Thank you for contributing to LangGraph! Follow these steps to mark your
pull request as ready for review. **If any of these steps are not
completed, your PR will not be considered for review.**

---
Local verification:
```bash
# Before
from langgraph.graph.message import REMOVE_ALL_MESSAGES  # Pylint: no-member

# After: no error
```
CI Note: This is a pure export/docs fix. `make lint` and `make test`
pass unchanged.
---
 libs/langgraph/langgraph/graph/message.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libs/langgraph/langgraph/graph/message.py b/libs/langgraph/langgraph/graph/message.py
index 7de775ea7..8470199a8 100644
--- a/libs/langgraph/langgraph/graph/message.py
+++ b/libs/langgraph/langgraph/graph/message.py
@@ -30,6 +30,7 @@ __all__ = (
     "add_messages",
     "MessagesState",
     "MessageGraph",
+    "REMOVE_ALL_MESSAGES",
 )
 
 Messages = list[MessageLikeRepresentation] | MessageLikeRepresentation