hpaulj questions

hpaulj answers

• Can one form a view into diagonal of ndarray in numpy
• How to print the help (usage) section for the main parser of Argparse and not the usage of a subparser?
• IPython %timeit magic - changing output from "mean & std" to "best of 3"
• What's the point of having both action='store_true' and default=False in parser.add_argument?
• Merging records in a Numpy structured array
• Numpy safe programming
• sklearn train_test_split on scipy sparse matrix gives wrong result
• How can I select values along an axis of an nD array with an (n-1)D array of indices of that axis?
• Why does `numpy.einsum` work faster with `float32` than `float16` or `uint16`? [duplicate]
• matrix entries also matrices in python