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singleton = (2)
type(singleton)



Carambo £¬ qutr at tjub.com.cn 
2005-5-23 
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·¢¼þÈË: „¢ÀÚ 
ÊÕ¼þÈË: python-chinese 
ʱ  ¼ä: 2005-05-23, 11:41:57
Ö÷  Ìâ: [python-chinese] Çë½Ì¹ØÓÚÔª×éµÄÎÊÌâ¡£


含有0个或1个项目的元组。一个空的元组由一对空的圆括号组成，如myempty = ()。然而，含有
单个元素的元组就不那么简单了。你必须在第一个（唯一一个）项目后跟一个逗号，这样Python
才能区分元组和表达式中一个带圆括号的对象ã€?FONT color=#ff0000>即如果你想要的是一个包含项ç›?的元组的æ—?BR>候，你应该指明singleton = (2 , )ã€?/FONT>

--摘自《简æ˜?Python 教程ã€?/FONT>

问题1：singleton = (2 , )是元组而singleton = (2)就不是元组？
问题2：singleton = (2)不是元组是什么呢ï¼?/STRONG>

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