# !pip install -U numpy scipy pandas tensorflow torch scikit-learn
print(f"NumPy: {np.__version__}")
print(f"SciPy {scipy.__version__}")
print(f"pandas: {pd.__version__}")
print(f"TensorFlow {tf.__version__}")
print(f"PyTorch: {torch.__version__}")
print(f"scikit-learn: {sklearn.__version__}")
tree_heights = [55, 60, 62, 44]
np.array(tree_heights)
np.array(list(enumerate(tree_heights)))
np.linspace(10, 50)