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      tup = ('one','two','three')
      ¶ÔÓÚÔª×éµÄ¶¨Ò壬ÓÐÁ½ÖÖÇé¿öÐèҪעÒ⣺Ԫ×éÖеÄÔªËØÊýÁ¿Îª0»ò1ʱ¡£¶¨ÒåÒ»¸öÔªËØÊýΪ0µÄÔª×飺zero_tup = ()¡£¶¨ÒåÒ»¸öÔªËØÊýΪ1µÄÔª×飺one_item_tup = (1,)¡£¶ÔÓÚÒ»¸öÔªËØµÄÔª×éµÄ¶¨Ò壬ÐèÒªÔÚÔªËØºó¼ÓÒ»¸ö¶ººÅ¡£Ô­ÒòÔÚÓÚÈç¹ûûÓÐÀ¨ºÅ£¬¾Í»áºÍ¸Ä±äÔËËãÓÅÏȼ¶µÄÀ¨ºÅ²úÉúÆçÒå¡£
      ¶ÔÓÚÔª×éµÄ·ÃÎÊ£¬¿ÉÒÔʹÓÃÏñÊý×éÒ»Ñù£¬Ê¹ÓÃË÷ÒýÀ´Íê³É£º
      print(tup[1]
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      Ôª×黹ÓÐÁíÍâÒ»ÖÖʹÓ÷½·¨£¬¾ÍÊÇÔª×éǶÌס£ÀýÈ磺
      tup = ('one','two','three')
new_tup = ('four','five',tup)
print(tup)
print(new_tup)
print(new_tup[1])
print(new_tup[2])
print(new_tup[2][2])
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('one', 'two', 'three')
('four', 'five', ('one', 'two', 'three'))
five
('one', 'two', 'three')
three

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