打印菱形自己写的代码有错误不知道这么修改，麻烦大佬看看。

Question

打印出如下图案（菱形）:
'''
   *
  ***
 *****
*******
 *****
  ***
   *
'''

原题

自己写的

a = [1,3,5,7,5,3,1]
for i in range(8):
	if  0<= i < 4 :
		print(" " * int(((8 - 2*i)/2)) + "*" * int(a[i]))
	elif 3 < i <= 7:
		print(" " * int(i-2) + "*" * int(a[i]))

结果

    *
   ***
  *****
 *******
  *****
   ***
    *
Traceback (most recent call last):
  File "23.py", line 42, in <module>
    print(" " * int(i-2) + "*" * int(a[i]))
IndexError: list index out of range

有没有大佬会解决这个小问题啊， 

Answer 1

一共才7个数，下标从0 开始的 0-6 就有7个数了

 

a = [1,3,5,7,5,3,1]
    
for i in range(7):
    
    if  0<= i < 4 :
    
        print(" " * int(((7 - 2*i)/2)) + "*" * int(a[i]))
    
    elif 3 < i <= 6:
    
        print(" " * int(i-2) + "*" * int(a[i]))