馃摎 Add examples/simple.py: minimal training demo - #18
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Creates examples/simple.py demonstrating core ScratchGPT usage: auto-downloads text data, trains small model with CharTokenizer, shows text generation, uses temp dirs for clean execution
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- Remove subprocess dependency, use Python's built-in urlretrieve() instead - Eliminate curl requirement that could fail on some systems - Always download fresh data (removed file existence check)
- Wrap trainer.train() in try-catch to handle KeyboardInterrupt - Allow users to stop training and proceed to text generation demo - Add clear instruction about Ctrl-C functionality for better UX - Ensure text generation always runs regardless of training completion
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ayeganov
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What does this PR do?
Adds a self-contained example showing the bare minimum ScratchGPT usage to train a transformer on Darwin's "On the Origin of Species".
The script downloads text data, trains a small model with
CharTokenizer, demonstrates text generation, then auto-cleans all temporary files.