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Rorschach
V2EX  ›  Python

用 Python 自身如何实现 int()、set()、str()这些工厂函数

  •  
  •   Rorschach · Feb 19, 2015 via Android · 3877 views
    This topic created in 4168 days ago, the information mentioned may be changed or developed.
    4 replies    2015-02-20 16:42:15 +08:00
    Melodic
        1
    Melodic  
       Feb 19, 2015
    判断类型-->执行 --> 检查类型 --> 返回值
    |
    ->触发异常

    type和isinstance()可以用嘛?
    est
        2
    est  
       Feb 20, 2015 via Android
    PyObject里随便撸
    dant
        3
    dant  
       Feb 20, 2015 via iPhone
    str(obj) -> obj.__str__()
    geew
        4
    geew  
       Feb 20, 2015
    3楼说得很对 python里面 万物皆对象 楼主所说的工厂函数在每个对象里面都有自己的实现
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