I'm making a 10-by-10 grid of `0`s. I want to be able to change (for example) the top 5 rows to "ONE" through an if statement.

What's the best way to go about doing it without targeting each individual `0`?

I've tried doing something like `grid[:5][:5]` to target multiple `0`s, but that doesn't do anything.

```
grid = [[0 for x in range(10)] for y in range(10)]

number = 1

if number is 1:
    grid[:5][:5] = "ONE"

for row in grid:
    print(" ".join(map(str, row)))

```