Access from one class to methode of other class

[VK]

> I don't know if your're actually calling the classes '1' and '2', but
> that's a really bad idea!
> 
> 
>>class 2:
>>   def ins(self)
>>       d.entry.insert(variable)
> 
> 
> This is probably where you're getting the NameError. d is not defined,
> so calling d.entry will generate an error.
> 
> Reidar
> 

What is d = 1() in my example then? And how do I solve this problem?
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