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NumPy
NumPy is the foundational library for the scientific computing library for the Python ecosystem; the main libraries in the ecosystem—pandas, matplotlib, SciPy, and scikit-learn—are based on NumPy.
For more information, please refer to http://numpy.org.
As it is a foundational library, it is important to know at least the basics of NumPy. Let's have a mini tutorial on NumPy.