How to create an array where each element is equal to its row number?

Question

I was wondering how I can assign each element in an array to be equal to its row number. For example an array of,

Row number: 1,2,3,4,5,6,7,8,9,10
Elementnum: 1,2,3,4,5,6,7,8,9,10

import numpy as np
array=np.ones(10)
#What next?

This will be done with large row numbers of n=1000 so I won't manually be able to do it.

Thanks

Answer 1

np.arange(1, 1000) if you want a 1-based numbering.