1. NumPy (arrays, broadcasting, vectorized ops)

2. Pandas (DataFrames, Series, data manipulation)

3. Matplotlib & Seaborn (visualization)

4. Scikit-learn (ML pipeline, feature extraction)

5. NLTK (classic NLP toolkit)

6. spaCy (industrial NLP)

7. Gensim (topic modeling, word vectors)

8. Hugging Face Transformers (modern NLP)

9. PyTorch (deep learning framework)

10. TensorFlow / Keras (alternative deep learning)

11. Jupyter Notebooks