* Update loader.py
change vllm installed check by transformers utils function
* Update llama.py
change vllm installed check by transformers utils function
* add sample notebook
* fix Indentation
* add global is_vLLM_available function
* Pythonic style
* Delete nb/Qwen2.5_(3B)-GRPO-windows.ipynb
Would be great to move it to https://github.com/unslothai/notebooks - appreciate it!
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Co-authored-by: Daniel Han <danielhanchen@gmail.com>
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