[Zope-dev] zope.component: calling an Interface and calling queryAdapter give differing results

[Chris Withers]

 From a user's perspective, this makes no sense:

 >>> from zope.interface import implements,Interface
 >>> from zope.component import queryAdapter
 >>> class ISomething(Interface): pass
...
 >>> class MyClass: implements(ISomething)
...
 >>> m = MyClass()

Right, so this does make sense:

 >>> ISomething(m)
<__main__.MyClass instance at 0x00BED6E8>

This does not:
 >>> repr(queryAdapter(m,ISomething))
'None'

why the difference?

cheers,

Chris

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