3

var = Instance(object)?

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    Since it's not part of the standard library, we can only guess. Where did you see this code? Please provide a reference or a link to the place where you saw this code. Commented Aug 21, 2010 at 20:02
  • Perhaps s/he meant isinstance? Commented Aug 21, 2010 at 21:29
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    @elo80ka: Unlikely: the question's syntax isn't close to isinstance at all. Commented Aug 21, 2010 at 21:54

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It calls the __call__() method.

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Actually, I thought it was from the standard library. On inspection, it is from enthought.traits.api.Instance. It holds a reference to an object instance. If you pass a specific class to the constructor (e.g. Instance(MyClass) ), it does validation to make sure you pass the correct class.

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