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Question: Can record or structured array fields be contiguous?

I frequently encounter situations where I need to load data from a Pandas DataFrame into NumPy arrays, perform computations, and then update the DataFrame. Typically, I have two approaches: Loading ...
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numpy_2D_array_indexing_and_slicing.py

ar2=np.array([[1,2,10,11,12],[3,4,13,14,15],[5,6,16,17,18],[7,8,19,20,21]]) ...