Numpy array using expression

Question

how can I create an np array using expression y1 = x, when x array is already defined

x = [1,2,5,7]

from this array x , I would like to create another array y1 using the expression

y1 = x

using numpy

I believe what you suggest should work: x = numpy.array([1,2,3]) ; y1=x — sdiabr, Jan 29 '19 at 10:28
Duplicate of https://stackoverflow.com/questions/5951135/how-to-save-a-list-as-numpy-array-in-python — yatu, Jan 29 '19 at 10:34

score 1 · Accepted Answer · answered Jan 29 '19 at 10:29

1

If you want a copy of the array it would be

import numpy as np
y1 = np.array(x)

Currently you just assign the list from x to y1. With this you create a new numpy array with the values from x.

answered Jan 29 '19 at 10:29

Syrius

thanks for the answer, my intention is to use expression y=x or y = 2x like that – Parthi Jan 29 '19 at 10:32
Then you need to set x = np.array([1,2,5,7]). Than you can just put y = x or y=2x or whatever you want. But in this case x has to be a numpy array – Syrius Jan 29 '19 at 10:35

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