python 输出菱形

*
**
***
****
*****
******
*******
********
*********
        *
       ***
      *****
     *******
    *********
   ***********
  *************
 ***************
*****************
    *
   ***
  *****
 *******
*********
 *******
  *****
   ***
    *

Nums = 9  # 三角形

for i in range(1, Nums + 1):
    for j in range(1, i + 1):
        print('*', end='')
    print()

# 金字塔
for i in range(1, Nums + 1):
    for j in range(1, Nums - i + 1):
        print(end=' ')
    for j in range(1, 2 * i):
        print('*', end='')
    print()

# 菱形 Nums=9
k = Nums // 2 + 1
for i in range(1, k + 1):
    for j in range(1, k - i + 1):
        print(end=' ')
    for j in range(1, 2 * i):
        print('*', end='')
    print()

for i in range(k - 1, 0, -1):
    for j in range(1, k - i + 1):
        print(end=' ')
    for j in range(1, 2 * i):
        print('*', end='')
    print()