[Grok-dev] Problem with a container

[Uli Fouquet]

Hi there,

rockaroundtheclock wrote:
> I'm new to Grok, and have a simple problem:
> 
> I got a container in a module "xyz" called "Times". The container contains a
> list of Objects (Instances of a class). With "for x in
> self.context.values()" , I can access the objects of the container without
> problems,
> but if I try to do that in another module (let's say "abc" + import of the
> first module "xyz"), I'm unable to access the objects in the container
> (tried with "xyz.Times.values()").
> 
> I recieve following error:  
> 
> TypeError: unbound method values() must be called with Times instance as
> first argument (got nothing instead)
> 
> Any Idea, or tip how to acces values of a container from outside the module
> the container-class belongs to?

You're mixing up classes and instances of classes here. `values()`
operates on _instances_ of `Times`.

You can do:

  mytimes = Times()
  mytimes.values()

or, within a method of class `Times`:

  self.values()

or, if `context` contains an instance of `Times`:

  context.values()

You cannot do:

  Times.values()

as `values()` is not a classmethod.

Hope that helps,

-- 
Uli

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