ageron/handson-mlp

[bug] chapter 2 ipynb code

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#31 opened on Mar 5, 2026

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bughelp wanted

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Description

Enter the chapter number

2

Enter the page number

can't tell page number because it's on oreilly.com, but it is the section entitled "Create a Test Set"

What is the cell's number in the notebook

No response

Enter the environment you are using to run the notebook

Jupyter on Windows

Describe your issue

using jupyter in VS Code, the markdown text that describes the PYTHONHASHSEED environment variable says the variable needs to be set to "0". It really needs to be set to 0. otherwise the initialization of sys hangs.

Enter what you expected to happen

No response

If you found a workaround, describe it here

set the environment variable to 0

Contributor guide

Research direction
Inspect the notebook cell and correct the markdown to set PYTHONHASHSEED to 0 without quotes.
Tech stack
python
Domain
documentation
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
1
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Under 1 hour
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
basic Python
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
95