[BangPypers] how to delete base class attribute

[Jeffrey Jose]

On Sun, Aug 1, 2010 at 12:11 AM, Nitin Kumar <nitin.nitp at gmail.com> wrote:

> Thanks Jeffrey,
>
> I have one more query, but i am not able to explain you.
> will send u a mail in few min.
>
> Thanks
>

I recommend sending mails to the whole group if your mail is a followup to
the original problem. The purpose is 2 fold,

1. You'll get more eyeballs -> more quality responses.
2. We can document it more formally so that someone later on can browse mail
archives.

/jeff




> On Sat, Jul 31, 2010 at 11:57 PM, Jeffrey Jose <jeffjosejeff at gmail.com
> >wrote:
>
> > 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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>
>
> --
> Nitin K
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