[Relay]What does relay.take() mean? Is it a copy or a reference?

Questions
5

Let’s say that arr is assigned:

arr = relay.zeros((m, n), dtype="int32")

then I wanna do as in python:

arr[i][j] = 1 
arr[i][j] += 1

how to do these in relay? I know index_put_() in torch can do so.
Btw, how to initialize an array by custom? THANKS A LOT