python双重循环打印下图所示菱形不用import * *** ***** ******* ***** *** *

以下是使用双重循环打印菱形的Python代码：

rows = int(input("请输入菱形边长："))
# 打印菱形上半部分
for i in range(rows):
    for j in range(rows - i):
        print(" ", end="")
    for k in range(2 * i - 1):
        if k == 0 or k == 2 * i - 2:
            print("*", end="")
        else:
            print(" ", end="")
    print()

# 打印菱形的下半部分
for i in range(rows-2, 0, -1):
    for j in range(rows - i):
        print(" ", end="")
    for k in range(2 * i - 1):
        if k == 0 or k == 2 * i - 2:
            print("*", end="")
        else:
            print(" ", end="")
    print()

运行结果如下：

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