From cc84ff5e7d721a1309ba8e6ebd80238f90af389d Mon Sep 17 00:00:00 2001
From: Andrew Murray <radarhere@users.noreply.github.com>
Date: Mon, 17 Apr 2023 16:10:29 +1000
Subject: [PATCH] Note that open() seeks to the start of file objects

---
 src/PIL/Image.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/PIL/Image.py b/src/PIL/Image.py
index 5a43f6c4a..6dfde70a0 100644
--- a/src/PIL/Image.py
+++ b/src/PIL/Image.py
@@ -3156,7 +3156,8 @@ def open(fp, mode="r", formats=None):
     :param fp: A filename (string), pathlib.Path object or a file object.
        The file object must implement ``file.read``,
        ``file.seek``, and ``file.tell`` methods,
-       and be opened in binary mode.
+       and be opened in binary mode. The file object will also seek to zero
+       before reading.
     :param mode: The mode.  If given, this argument must be "r".
     :param formats: A list or tuple of formats to attempt to load the file in.
        This can be used to restrict the set of formats checked.