NEWBIE: Sub-Classes

engsolnom at ipns.com engsolnom at ipns.com
Wed Dec 31 02:40:03 CET 2003


I'm a bit baffled. In the code below, I expected that the import in tst_sub.py would expose all the
contents of dir_a.py.  But, as it turns out...it doesn't.

I can understand (I think) why B has to be qualified in class A(dir_a.B), but why is dir_a.B.class_B
required?

Also, how can I expose self.B_self to A?

Thanks......Norm

DIRECTORY DIRA: DIR_A.PY:

var = 13
class B:
    class_B = 21
    def __init__ (self):
        self.B_self = 31

    def B_meth_1(self):
        self.class_B = 19

DIRECTORY MYFILES: TST_SUB.PY:

import dir_a

print dir_a.var

class A(dir_a.B):
    def __init__ (self):
        self.B_meth_1()                     # Run the base class B method
        self.class_a  = self.class_B        # Gets the value in B_meth_1
        self.class_aa = dir_a.B.class_B     # Gets B's 'static' var
        print self.class_a 
        print self.class_aa       

                      # Prints 13
obj_1 = A()     # Prints 19, 21
obj_2 = A()     # Prints 19, 21 showing A.__init__() was run again




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