From 98bbb02f909d09a05ced2c8ac2da098ac6f24589 Mon Sep 17 00:00:00 2001
From: Michelle Han <han.m@wustl.edu>
Date: Fri, 25 Sep 2026 01:15:45 -0400
Subject: [PATCH] Fix broken MNIST and TensorDataset links in nn_tutorial

The MNIST link to yann.lecun.com no longer resolves (HTTPS times out,
HTTP returns 404), so point it to the Wikipedia article on the MNIST
database. The TensorDataset link pointed to a /_modules/ source page
that now returns 404, so point it to the TensorDataset entry in the
torch.utils.data docs instead.

Fixes #3935

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 beginner_source/nn_tutorial.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/beginner_source/nn_tutorial.py b/beginner_source/nn_tutorial.py
index e04815bd27e..afe7ab1a8f0 100644
--- a/beginner_source/nn_tutorial.py
+++ b/beginner_source/nn_tutorial.py
@@ -31,7 +31,7 @@
 # MNIST data setup
 # ----------------
 #
-# We will use the classic `MNIST <https://yann.lecun.com/exdb/mnist/index.html>`_ dataset,
+# We will use the classic `MNIST <https://en.wikipedia.org/wiki/MNIST_database>`_ dataset,
 # which consists of black-and-white images of hand-drawn digits (between 0 and 9).
 #
 # We will use `pathlib <https://docs.python.org/3/library/pathlib.html>`_
@@ -473,7 +473,7 @@ def get_model():
 # walks through a nice example of creating a custom ``FacialLandmarkDataset`` class
 # as a subclass of ``Dataset``.
 #
-# PyTorch's `TensorDataset <https://pytorch.org/docs/stable/_modules/torch/utils/data/dataset.html#TensorDataset>`_
+# PyTorch's `TensorDataset <https://docs.pytorch.org/docs/stable/data.html#torch.utils.data.TensorDataset>`_
 # is a Dataset wrapping tensors. By defining a length and way of indexing,
 # this also gives us a way to iterate, index, and slice along the first
 # dimension of a tensor. This will make it easier to access both the