From 1617e0381a074ec1895a2535925e08f506310cfd Mon Sep 17 00:00:00 2001
From: John Kew <john.kew@snowflake.com>
Date: Tue, 9 Sep 2025 13:49:58 -0700
Subject: [PATCH 1/3] NO-SNOW: Configure certain pandas warnings to be
 print-once

---
 src/snowflake/connector/pandas_tools.py | 21 +++++++++++++++++++--
 1 file changed, 19 insertions(+), 2 deletions(-)

diff --git a/src/snowflake/connector/pandas_tools.py b/src/snowflake/connector/pandas_tools.py
index afa3d7d2af..2dfe10ad64 100644
--- a/src/snowflake/connector/pandas_tools.py
+++ b/src/snowflake/connector/pandas_tools.py
@@ -42,6 +42,23 @@
 logger = getLogger(__name__)
 
 
+class PandasUserOnceWarnings(UserWarning):
+    """
+    User warnings related to pandas operations
+    that only the user has control over. These
+    are configured to be printed once and only
+    once using a warning filter.
+    """
+
+    pass
+
+
+# Configure user-pandas warnings to print only once
+warnings.simplefilter(
+    "once", PandasUserOnceWarnings, module="snowflake.connector.pandas_tools"
+)
+
+
 def chunk_helper(
     lst: pandas.DataFrame, n: int
 ) -> Iterator[tuple[int, pandas.DataFrame]]:
@@ -397,7 +414,7 @@ def write_pandas(
             f"Pandas Dataframe has non-standard index of type {str(type(df.index))} which will not be written."
             f" Consider changing the index to pd.RangeIndex(start=0,...,step=1) or "
             f"call reset_index() to keep index as column(s)",
-            UserWarning,
+            PandasUserOnceWarnings,
             stacklevel=2,
         )
 
@@ -411,7 +428,7 @@ def write_pandas(
             f"'{use_logical_type=}'. This can result in dateimes "
             "being incorrectly written to Snowflake. Consider setting "
             "'use_logical_type = True'",
-            UserWarning,
+            PandasUserOnceWarnings,
             stacklevel=2,
         )
 

From c2bc30858a41cd115c70e270ba416f54098c1cd9 Mon Sep 17 00:00:00 2001
From: John Kew <john.kew@snowflake.com>
Date: Tue, 9 Sep 2025 14:10:17 -0700
Subject: [PATCH 2/3] Update changelog

---
 DESCRIPTION.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/DESCRIPTION.md b/DESCRIPTION.md
index 4765edf346..69649fa89b 100644
--- a/DESCRIPTION.md
+++ b/DESCRIPTION.md
@@ -9,6 +9,7 @@ Source code is also available at: https://github.com/snowflakedb/snowflake-conne
 # Release Notes
 - v3.18.0(TBD)
   - Added the `workload_identity_impersonation_path` parameter to support service account impersonation for Workload Identity Federation on GCP workloads only
+  - Print user related pandas warnings only once
 
 - v3.17.3(September 02,2025)
   - Enhanced configuration file permission warning messages.

From 2e2aa4cee675b2838153c8dfad30ec90acc2126d Mon Sep 17 00:00:00 2001
From: John Kew <john.kew@snowflake.com>
Date: Wed, 10 Sep 2025 11:28:16 -0700
Subject: [PATCH 3/3] simplefilter does not support module

---
 src/snowflake/connector/pandas_tools.py | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/snowflake/connector/pandas_tools.py b/src/snowflake/connector/pandas_tools.py
index 2dfe10ad64..632c9f4ebe 100644
--- a/src/snowflake/connector/pandas_tools.py
+++ b/src/snowflake/connector/pandas_tools.py
@@ -54,9 +54,7 @@ class PandasUserOnceWarnings(UserWarning):
 
 
 # Configure user-pandas warnings to print only once
-warnings.simplefilter(
-    "once", PandasUserOnceWarnings, module="snowflake.connector.pandas_tools"
-)
+warnings.simplefilter("once", PandasUserOnceWarnings)
 
 
 def chunk_helper(