def display_pattern(my_line):
   my_pattern=""
   for i in range(0,my_line):
      for j in range(0,my_line):
         if ((j == 1 and i != 0 and i != my_line-1) or ((i == 0 or i == my_line-1) and j > 1 and j < my_line-2) or (i == ((my_line-1)/2) and j > my_line-5 and j < my_line-1) or (j == my_line-2 and i != 0 and i != my_line-1 and i >=((my_line-1)/2))):
            my_pattern=my_pattern+"*"
         else:
            my_pattern=my_pattern+" "
      my_pattern=my_pattern+"\n"
   return my_pattern

num_line = 8
print("下面是字母 G 的图案 :")
print(display_pattern(num_line))

下面是字母 G 的图案 :
****
*
*
*
* *
* *
* *
****