有没有办法改变 str 的 __repr__ - V2EX
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tioover
V2EX    Python

有没有办法改变 str 的 __repr__

  •  
  •   tioover
    tioover 2014-03-19 16:04:48 +08:00 3557 次点击
    这是一个创建于 4223 天前的主题,其中的信息可能已经有所发展或是发生改变。
    默认输出单引号,但需要双引号……

    我猜要用 metaclass
    5 条回复    1970-01-01 08:00:00 +08:00
    mengzhuo
        1
    mengzhuo  
       2014-03-19 16:33:27 +08:00
    直接replace不能用?

    我猜楼主是要输出json?格式化数据就统统交给各个库就好了
    Shared
        2
    Shared  
       2014-03-19 17:25:44 +08:00
    你不能直接覆盖 built-in types,如果要修改 str 的行为有个变通的方法

    http://gist.github.com/anonymous/9638324

    不知道能不能满足你的需要
    timonwong
        3
    timonwong  
       2014-03-19 18:32:03 +08:00
    Check the following python script if you:
    1) are going down
    2) are using CPython

    https://github.com/gabrielfalcao/sure/blob/master/sure/magic.py
    tioover
        4
    tioover  
    OP
       2014-03-19 18:37:23 +08:00 via Android
    @mengzhuo 我就是在写 parser
    tioover
        5
    tioover  
    OP
       2014-03-19 18:37:44 +08:00 via Android
    @timonwong THX 看看
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