object inheritance and nested cmd

Question

This is probably a basic OO question: I\'m trying to do a nested console menu with cmd which has gone well. I also want all my sub-consoles to have access to the same object

Answer 1

The other answer is correct insofar as you should not be using multiple inherritance, as the following is true:

class A(object):
  pass
class B(A):
  pass
class C(A):
  pass
class D(B):
  pass
a = A()
b = B()
c = C()
d = D()

isTrue = isinstance(a,A) and isinstance(b,A) and isinstance(c,A) and isinstance(d,A)
isTrue = isTrue and isinstance(b,B)and isinstance(d,B)
isTrue = isTrue and isinstance(c,C) 
isTrue = isTrue and isinstance(d,D)

>>> print isTrue
True

It would also be wise to create a method of your main class wich creates subcmds, passing their reference to the subcmd's __init__ function. This way you have your object spawn its children more naturally.

class MainConsole(cmd.Cmd):
    def spawnsubconsole(self):
        return SubConsole1(self)
    def __init__(self):
       cmd.Cmd.__init__(self, obj1, obj2)
       self.obj1 = obj2
       self.obj2 = obj2

class SubConsole1(cmd.Cmd):
    def __init__(self, maincon):
        cmd.Cmd.__init__(self)
        self.maincon = maincon

Then you can access the objects you want by accessing self.maincon.obj1 and self.maincon.obj2 and get the sub-cmd by running maincon.spawnsubconsole() assuming maincon is an instance of the main console class.