liukun2009 发表于 2018-8-10 13:08:39

python 打印空心正方形

  #打印出一个空心正方形
  num = input ("zheng fang xing bian chang :")
  num = int(num)
  for i in range(num):
  if i == 0 or i == (num-1):
  print ("#\t"num)
  else:
  print ("#"+"\t"(num-1)+"#")
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