From f3dcdc9ddde8f5081c4fe6e2d4043e6ef837c5cd Mon Sep 17 00:00:00 2001
From: Matthew Roeschke <10647082+mroeschke@users.noreply.github.com>
Date: Thu, 30 Oct 2025 14:19:55 -0700
Subject: [PATCH] DOC: Add filesystem keyword arg and documentation to
 DataFrame.to_parquet

---
 pandas/core/frame.py | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/pandas/core/frame.py b/pandas/core/frame.py
index 68ea6795d47dd..896b2a943025b 100644
--- a/pandas/core/frame.py
+++ b/pandas/core/frame.py
@@ -2918,6 +2918,7 @@ def to_parquet(
         index: bool | None = ...,
         partition_cols: list[str] | None = ...,
         storage_options: StorageOptions = ...,
+        filesystem: Any = ...,
         **kwargs,
     ) -> bytes: ...
 
@@ -2931,6 +2932,7 @@ def to_parquet(
         index: bool | None = ...,
         partition_cols: list[str] | None = ...,
         storage_options: StorageOptions = ...,
+        filesystem: Any = ...,
         **kwargs,
     ) -> None: ...
 
@@ -2944,6 +2946,7 @@ def to_parquet(
         index: bool | None = None,
         partition_cols: list[str] | None = None,
         storage_options: StorageOptions | None = None,
+        filesystem: Any = None,
         **kwargs,
     ) -> bytes | None:
         """
@@ -2983,6 +2986,12 @@ def to_parquet(
             Must be None if path is not a string.
         {storage_options}
 
+        filesystem : fsspec or pyarrow filesystem, default None
+            Filesystem object to use when reading the parquet file. Only implemented
+            for ``engine="pyarrow"``.
+
+            .. versionadded:: 2.1.0
+
         **kwargs
             Additional arguments passed to the parquet library. See
             :ref:`pandas io <io.parquet>` for more details.
@@ -3044,6 +3053,7 @@ def to_parquet(
             index=index,
             partition_cols=partition_cols,
             storage_options=storage_options,
+            filesystem=filesystem,
             **kwargs,
         )