Fill np array with repetitive sequence of integers using python

Question

I have an array with a sequence of integers like this:

import numpy as np
a1 = np.zeros((1, 100000))
a2 = np.arange(-50, 50+1)
#so a2 looks like this
a2 = [-50, -49, ....., -1, 0, 1, ...., 49, 50]

how can i add the sequence of a2, to a1 multiple times in a row?

Serge Ballesta · Accepted Answer · 2020-04-02 21:54:42Z

1

You can tile numpy arrays:

a1 = np.zeros((1, 100000))
a2 = np.arange(-50, 50+1)
a1 += np.tile(a2, 1000)[:100000]

print(len(a1), repr(a1))

It gives:

100000 array([-50, -49, -48, ..., -43, -42, -41])

answered Apr 2, 2020 at 21:54

Serge Ballesta

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