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Hello, NumPy
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NumPy is a Python numeric library marrying Python's ease of use with C's
number-crunching performance. It has proved explosively successful, a key
component in most of Python's data science and numeric packages -- Pandas,
SciPy, Matplotlib, and scikit-learn among them. Other libraries, like
TensorFlow, make use of its concepts.

It's no Frankenstein, either: NumPy code can be clean and beautiful.

What's the chemistry behind this odd couple?