Em Seg, 2006-04-10 às 07:19 -0700, fyhuang escreveu:
> class PythonClass:
> private foo = "bar"
> private var = 42
> allow_readwrite( [ foo, var ] )
You are aware that foo and var would become class-variables, not
instance-variables, right?
But you can always do:
class PythonClass(object):
def __init__(self):
self.__foo = "bar"
foo = property(lambda self: self.__foo)
And then:
>>> a = PythonClass()
>>> a.foo
'bar'
>>> a.foo = 'baz'
Traceback (most recent call last):
File "<stdin>", line 1, in ?
AttributeError: can't set attribute
But you can also bypass this "security":
>>> a._PythonClass__foo = 'baz'
>>> a.foo
'baz'
But this was not a mistake, nobody mistakenly writes "_PythonClass__".
> Or allow_read to only allow read-only access. Also there might be a
> way to implement custom getters and setters for those times you want
> to modify input or something:
>
> class PythonClass:
> def get foo():
> return "bar"
>
> def set var( value ):
> var = value
There's a PEP somewhere that proposes things like (same example I gave
earlier):
class PythonClass(object):
def __init__(self):
self.__foo = "bar"
create property foo:
def get(self):
return self.__foo
--
Felipe.
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