spiralNumbers.py

def spiralNumbers(n):
    m = [[0]*n for _ in range(n)]
    dx, dy = [0,1,0,-1], [1,0,-1,0]
    x, y, c = 0,-1,1
    for i in range(2*n-1):
    	for j in range((2*n-i)//2):
    		x += dx[i%4]
    		y += dy[i%4]
    		m[x][y] = c
    		c+=1
    return m
    
print(spiralNumbers(3))