Python学习笔记-用Try语句处理错误

while True:
  reply = input('Enter text:')
  if reply == 'stop' : break
  try:
    num = int(reply)   #尝试的语句
  except:
    print('Bad!' * 8)  #失败则执行
  else:
    print(int(reply) ** 2)  #成功则执行
print('Bye')