[BangPypers] how to delete base class attribute

[Jeffrey Jose]

On Thu, Jul 29, 2010 at 3:13 PM, Mehndi, Sibtey
<sibtey.mehndi at genpact.com>wrote:

> Nitin,
>         del can only remove the elements present in the instance
> dictionary. If you check self.__dict__ then it shows that A is not in the
> dictionary only 'a' and 'b' exist in the dict that's why it is giving the
> attribute error.
>
>
> Sibtey
>

To add to what Sibtey already finely explained,

The only valid use case of del/ __del__ happens to be cleaning up the
namespace if you're writing a module. Every other use case of del/__del__
might or might not work.

/jeff


>
> -----Original Message-----
> From: bangpypers-bounces+sibtey.mehndi=genpact.com at python.org [mailto:
> bangpypers-bounces+sibtey.mehndi <bangpypers-bounces%2Bsibtey.mehndi>=
> genpact.com at python.org] On Behalf Of Nitin Kumar
> Sent: Thursday, July 29, 2010 2:18 PM
> To: Bangalore Python Users Group - India
> Subject: [BangPypers] how to delete base class attribute
>
> Hi all,
>
>
>
> Say I have 10 functions in base class and I have inherited it in some
> derived class.
>
> But I only want 9 of the base class function to be available in child
> class.
> (and I don't want to make that one class private)
>
>
>
> class x:
>
>    def __init__(self):
>
>        self.a =3
>
>        self.b= 4
>
>    def A(self):
>
>        print (self.a)
>
>    def B(self):
>
>        print (self.b)
>
>
>
> class y(x):
>
>    def __init__(self):
>
>        x.__init__(self)
>
>        del (self.A)                                  #This is giving    del
> (self.A)
>
> AttributeError: A
>
>
>
>
>
> Anticipating your reply soon.
>
> --
> Nitin K
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