From 177b9cb52e57da4e62dd8483bcd5905990d03f9e Mon Sep 17 00:00:00 2001
From: "Simon A. Eugster" <simon.eu@gmail.com>
Date: Mon, 19 Feb 2024 08:50:09 +0100
Subject: Docs: Add explanation about little/big endian (#109841)

Co-authored-by: Adam Turner <9087854+AA-Turner@users.noreply.github.com>
Co-authored-by: Shantanu <12621235+hauntsaninja@users.noreply.github.com>
---
 Doc/library/struct.rst | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Doc/library/struct.rst b/Doc/library/struct.rst
index e2e6fc5..3e507c1 100644
--- a/Doc/library/struct.rst
+++ b/Doc/library/struct.rst
@@ -160,6 +160,21 @@ following table:
 
 If the first character is not one of these, ``'@'`` is assumed.
 
+.. note::
+
+   The number 1023 (``0x3ff`` in hexadecimal) has the following byte representations:
+
+   * ``03 ff`` in big-endian (``>``)
+   * ``ff 03`` in little-endian (``<``)
+
+   Python example:
+
+       >>> import struct
+       >>> struct.pack('>h', 1023)
+       b'\x03\xff'
+       >>> struct.pack('<h', 1023)
+       b'\xff\x03'
+
 Native byte order is big-endian or little-endian, depending on the
 host system. For example, Intel x86, AMD64 (x86-64), and Apple M1 are
 little-endian; IBM z and many legacy architectures are big-endian.
-- 
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