#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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