Python赋值语句后逗号的作用分析
本文实例讲述了Python赋值语句后逗号的作用。分享给大家供大家参考。具体分析如下:
IDLE 2.6.2
>>> a = 1 >>> b = 2, >>> print type(a) <type 'int'> >>> print type(b) <type 'tuple'> >>> c = [] >>> d = [], >>> print type(c) <type 'list'> >>> print type(d) <type 'tuple'>
赋值表达式的后面加了逗号后,会自动得到一个tuple的对象,在作一些与类型相关的工作或需要序列化时,是不能得到期望的结果的。工作中碰到类似灵异现象时,可以把这个放到自己的checklist中了。
>>> print c [] >>> print d ([],) >>> print a 1 >>> print b (2,)
希望本文所述对大家的Python程序设计有所帮助。

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