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Date: Thu, 12 Sep 2013 14:15:47 +0800 (SGT)
From: chandan kumar <chandan_psr@yahoo.co.in>
Subject: Accessing class attribute
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Xref: csiph.com comp.lang.python:54037

Hi ,

I'm new to python ,please correct me if there is any thing wrong with the w=
ay accessing class attributes.

Please see the below code .I have inherited confid in ExpectId class, chang=
ed self.print_msg  to Hello. Now  inherited confid in TestprintmsgID class.=
Now  I wanted to print self.print_msg value (which is changed under ExpectI=
d class)  as Hello under TestprintmsgID. I end up with error saying Testpri=
ntmsgID has no attribute self.print_msg.  Atleast i expect the null to be p=
rinted.



class confid():
    def __init__(self):
        self.print_msg =3D ""

class ExpectId(confid):   =20

    def __init__(self):
        self.print_msg =3D " Hello"

    def expectmethod(self):
        print "self.print_mesg =3D ",self.print_msg

class TestprintmsgID(confid):  =20
=20
    def __init__(self):
        "Created  Instance"

    def printmsgmethod(self):
        print "printmsgmethod print_msg val =3D ",self.print_msg---- Here i=
s the  Attribute error


if __name__ =3D=3D '__main__':
    ins1 =3DExpectId()
    ins1.expectmethod()

    ins2 =3D TestprintmsgID()
    ins2.printmsgmethod()

Best Regards,
Chandan