a = '*'
b = 11
for i in range(0,b):
print(" " * (b - i), end='')
i = (1+2*i)*a
print(i)
a = '*'
b = 11
for i in range(0,b):
print((1+2*i)*a)
a = '*'
b = 11
for i in range(0,b):
print(" " * (b - i), end='')
c = '-'*(b-i)
i = (1+2*i)*a
print(i+c)
预览结果： * *** ***** ******* ********* *********** ************* ***************
*-----------
***----------
*****---------
*******--------
*********-------
***********------
*************-----
***************----
*****************--- *******************-- *********************-
