#python 100 例 9.py
#用*打印出一个棱形
a = int(input("biangchang: "))
#获取由几个* 边长的棱形
i = 1
j = 1
while i<a+1:
print (" "*(a-i)," * "*(2*i-1))
i = i+1
while j<a+1:
print (" "*j," * "*(2*(a-j)-1))
j = j+1
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