Le Friday 18 July 2008 11:36:20 King, vous avez écrit :
> Could you please suggest an alternative or code improvement for the
> matter.
I'm not sure what you are trying to achieve with your snippet, but I suspect
it's some sort of templating, right ? If so, using the dynamic nature of
python should help :
>>>[103]: def make_subtype_with_attr(type_, ro_attr, rw_attr) :
dic = {}
for i in ro_attr : dic[i] = property(lambda s, n=i : getattr(s, '_'+n))
def __new__(cls, *args, **kwargs) :
instance = type_.__new__(cls, *args)
for i in rw_attr : setattr(instance, i, kwargs[i])
for i in ro_attr : setattr(instance, '_'+i, ro_attr[i])
return instance
dic['__new__'] = __new__
return type('my_' + type_.__name__, (type_,), dic)
.....:
>>>[113]: my_int = make_subtype_with_attr(int,
{'name' : 'myint', 'id':123452}, ('foo',))
>>>[114]: i = my_int(5, foo=3)
>>>[115]: i.foo
...[115]: 3
>>>[116]: i
...[116]: 5
>>>[117]: i.id
...[117]: 123452
>>>[118]: i.id = 2
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
/home/maric/<ipython console> in <module>()
AttributeError: can't set attribute
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Maric Michaud
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