mastering-pytorch-rl-nlp

Expert guidance for PyTorch development covering Deep Reinforcement Learning and NLP Transformers. This skill provides comprehensive knowledge for building RL agents with TorchRL (DQN, PPO) and NLP systems with HuggingFace Transformers. Use this skill when working with PyTorch 2.7+, implementing reinforcement learning algorithms, fine-tuning transformer models, or deploying ML systems to production. Includes current best practices, verified library versions (Dec 2025), and warnings about deprecated APIs.