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A comment on Einstein Summation in Numpy. Parent comment

Re:Einstein Summation in Numpy by hprotagonist on Wednesday January 23, 2019 @09:08AM (#18978184)
yes it does. nobody actually uses them, but a non-list ordered sequence of values is actually part of the library.

https://docs.python.org/3/library/array.html

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Re:Einstein Summation in Numpy by stochastic_monk on Wednesday January 23, 2019 @12:43PM (#18980479)
For one-dimensional arrays, python's array can be faster. It's also directly accessible through the Python C API/Cython's wrapping of it, which makes it convenient to use.
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