for i in range(1,7): for j in range(1,7-i): print(" ",end="") for k in range(1,2*i-1+1): if k==1 or k==2*i-1 or i==6: print("*",end="") else: print(" ",end="") print()
打印空心三角形
原文：https://www.cnblogs.com/Python-T/p/9382976.html
