子类int和重写__init__方法 - Python的

Question

Possible Duplicate:
inheritance from str or int

乡亲嗨，

我想继承int类没有任何成功。这里是我的尝试：

class SpecialInt(int): 
    def __init__(self, x, base=10, important_text=''): 
     int.__init__(self, x, base) 
     self.important_text=important_text 

如果我执行以下操作：

integer = SpecialInt(123, 10, 'rage of the unicorns') 

我得到这个错误：

TypeRror: int() takes at most 2 arguments (3 given) 

---

任何想法？ :)

Answer 1

见__new__：

__new__() is intended mainly to allow subclasses of immutable types (like int, str, or tuple) to customize instance creation. It is also commonly overridden in custom metaclasses in order to customize class creation.

Answer 2

见Subclassing int in Python