题解 | #递归画图#

def xc(n, x, y):
    if n < 9 and n > 0:
        if n == 7:
            print(x*" "+n*"#"+y*" ")
        else:
            print(x*" "+n*"#"+y*" ")
            xc(n+2, x-1, y-1)
            print(x*" "+n*"#"+y*" ")
xc(1, 4, 4)