🔒 Empty grid looping forever

[golden scaffold]

Hi! I'm trying to make two circles next to each other, but I got some issues. Someone recommended me to try a code visualizer, and it helped me understanding things more! However, I still don't fully get the problem and I'd like to ask for some help!

It does its thing beautifully, but at the end it says the return value is none. Could that be the issue? If so, how can I fix it? Thank you!!

import math

def balls(radius):

    # empty grid
    grid = [[' ' for x in range(radius * 4)] for y in range(radius * 2)]

    for y in range(radius * 2):
        for x in range(radius * 4):
            centre = (x - radius) ** 2 + (y - radius) ** 2
            if radius >= centre:
                grid[y][x] = 'x'

    print(grid)

radius = int(input("Choose your size: "))
balls(radius)```

[long prairie]

@golden scaffold

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[golden scaffold]

Also, here's my output. It puts the x's in some places, but it's not looking as I expected and I'm confused

Choose your size: 2
[[' ', ' ', ' ', ' ', ' ', ' ', ' ', ' '], [' ', 'x', 'x', 'x', ' ', ' ', ' ', ' '], [' ', 'x', 'x', 'x', ' ', ' ', ' ', ' '], [' ', 'x', 'x', 'x', ' ', ' ', ' ', ' ']]

Process finished with exit code 0

[meager prism]

What are you expecting it to print in that case?

And what's looping forever? This seems to end fine.

[long prairie]

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