Python creating multiple array from a basis array

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Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 3 years ago. Improve this question Given an array [x1 x2 x3 ... xn] containing n elements, it is desired to produce such following array containing K rows: [[x1 x2 x3 ... xn], [x1^2 x2^2 x3^2 ... xn^2], [x1^3 x2^3 x3^3 ... xn^3], ..., [x1^K x2^K x3^K ... xn^K]]. How to get this efficiently ? JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

Answer 1

You can use numpy.power.outer: >>> K=9 >>> numpy.power.outer(numpy.array([1, 4, 5]), numpy.arange(1, K+1)).T array([[ 1, 4, 5], [ 1, 16, 25], [ 1, 64, 125], [ 1, 256, 625], [ 1, 1024, 3125], [ 1, 4096, 15625], [ 1, 16384, 78125], [ 1, 65536, 390625], [ 1, 262144, 1953125]])