python - 创建一个打印雪花的二维数组 PYTHON

Question

我正在尝试创建一段代码，该代码将接受奇数作为输入，并使用此 n * n 图形创建雪花

Enter Integer: 5
* . * . *
. * * * .
* * * * *
. * * * .
* . * . *

我很确定我走在正确的道路上

n = int(input("Enter odd input: "))
while n % 2 == 0:
  print("Invalid Input.  Input must be odd")
  n = int(input("Enter odd input: "))
snowflake = [["."] * n for i in range(n)]
middle = int((n-1) / 2)
for i in range(n):
  snowflake[i][2] = "*"
  snowflake[2][i] = "*"
  snowflake[i][i] = "*"
  diagnol = 5-i
  snowflake[i][diagnol] = "*"
for i in snowflake:
  for j in i:
    print(j, end=' ')
  print()
print()

但我不断收到此错误

snowflake[i][diagnol] = "*"
IndexError: list assignment index out of range

有人可以帮助编辑我的代码或给我一些提示吗？(这是一项家庭作业)

Answer 1

我决定不修复您的算法，而是作为提供我自己的算法的工作示例:

Try it online!

n = 9
a = [['.'] * n for i in range(n)]
for i in range(n):
    a[n // 2][i], a[i][n // 2], a[i][i], a[i][n - 1 - i] = ['*'] * 4
print('\n'.join([''.join(a[i]) for i in range(n)]))

输出:

*...*...*
.*..*..*.
..*.*.*..
...***...
*********
...***...
..*.*.*..
.*..*..*.
*...*...*