From 83349703ceb8f9b8a67aae979f2ad5fd7e3e059e Mon Sep 17 00:00:00 2001
From: Natalia Mokeeva <natalia.mokeeva.de@gmail.com>
Date: Tue, 11 Jul 2023 12:26:59 +0200
Subject: [PATCH 1/2] DOC: to_datetime param format has no effect for df

---
 pandas/core/tools/datetimes.py | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pandas/core/tools/datetimes.py b/pandas/core/tools/datetimes.py
index ea418a2c16d06..2ece60942cdf6 100644
--- a/pandas/core/tools/datetimes.py
+++ b/pandas/core/tools/datetimes.py
@@ -706,7 +706,8 @@ def to_datetime(
     arg : int, float, str, datetime, list, tuple, 1-d array, Series, DataFrame/dict-like
         The object to convert to a datetime. If a :class:`DataFrame` is provided, the
         method expects minimally the following columns: :const:`"year"`,
-        :const:`"month"`, :const:`"day"`.
+        :const:`"month"`, :const:`"day"`. The column "year"
+        must be specified in 4-digit format.
     errors : {'ignore', 'raise', 'coerce'}, default 'raise'
         - If :const:`'raise'`, then invalid parsing will raise an exception.
         - If :const:`'coerce'`, then invalid parsing will be set as :const:`NaT`.
@@ -765,6 +766,11 @@ def to_datetime(
           time string (not necessarily in exactly the same format);
         - "mixed", to infer the format for each element individually. This is risky,
           and you should probably use it along with `dayfirst`.
+
+        .. warning::
+
+            If a :class:`DataFrame` is passed, then `format` has no effect.
+
     exact : bool, default True
         Control how `format` is used:
 

From 19abef1c3df9d59ab05da601b331c085ec0621d6 Mon Sep 17 00:00:00 2001
From: Marco Edward Gorelli <marcogorelli@protonmail.com>
Date: Tue, 11 Jul 2023 13:01:22 +0100
Subject: [PATCH 2/2] warning -> note

---
 pandas/core/tools/datetimes.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pandas/core/tools/datetimes.py b/pandas/core/tools/datetimes.py
index 2ece60942cdf6..454c6e1be5b5f 100644
--- a/pandas/core/tools/datetimes.py
+++ b/pandas/core/tools/datetimes.py
@@ -767,7 +767,7 @@ def to_datetime(
         - "mixed", to infer the format for each element individually. This is risky,
           and you should probably use it along with `dayfirst`.
 
-        .. warning::
+        .. note::
 
             If a :class:`DataFrame` is passed, then `format` has no effect.