Python: Are these the same object, what's going on?

[MooMoo]

Right, heres the piece of code:

class Circuit:

    pass

class Workspace:

    Circuits = {}
    Components = {}


WORKSPACES = {}


WORKSPACES["a"] = Workspace()
WORKSPACES["b"] = Workspace()
WORKSPACES["c"] = Workspace()

#WORKSPACES["a"].Circuits["r"] = Circuit()

print WORKSPACES["a"].Circuits
print WORKSPACES["b"].Circuits
print WORKSPACES["c"].Circuits

Now, the output from this is:

{'r': <__main__.Circu it instance at 0x04AD2E90>}
{'r': <__main__.Circu it instance at 0x04AD2E90>}
{'r': <__main__.Circu it instance at 0x04AD2E90>}

but this isn't what I'm expecting, or what I want. TO put it best, I want the behavoius that matches this output:

{'r': <__main__.Circu it instance at 0x04AD2E90>}
{}
{}


Can anyone explain to me what's goig on here, and how I can get the behaviour I want?

[jlm699]

What's going on is your class is not correct. You need to initialize your class with an __init__ function and use the self reference; otherwise all instances of this class will reference the same variables.
[code=python]>>> class Workspace2:
... def __init__(self):
... self.Circuits = {}
... self.Components = {}
...
>>> Workspaces2['a'] = Workspace2()
>>> Workspaces2['b'] = Workspace2()
>>> Workspaces2['c'] = Workspace2()
>>> Workspaces2['a'].Circuits['r'] = Circuit()
>>> print Workspaces2['a'].Circuits
{'r': <__main__.Circu it instance at 0x01C894E0>}
>>> print Workspaces2['b'].Circuits
{}
>>> print Workspaces2['c'].Circuits
{}
>>>
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