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[Andrea Corbellini <andrea@xxxxxxxx>]

Public bug reported:

_SignatureChecker in interfaces.py raises a strange error when an
interface requires an attribute to be a method, but it actually isn't.
For example, look at this code:

class MyInterface(Interface):
    def mymethod(self): pass

class MyObject(object):
    implements(MyInterface)
    mymethod = 'string'

This will currently raise AttributeError("'str' object has no attribute
'func_code'"). However this message is difficult to understand. It would
be useful to raise a more detailed exception and this can be done by
checking the type of ``attrs[name]`` in interfaces.py.

** Affects: beeseek-base
     Importance: Wishlist
         Status: Triaged


** Tags: trivial

** Changed in: beeseek-base
   Importance: Undecided => Wishlist
       Status: New => Triaged

** Tags added: trivial

-- 
_SignatureChecker gives a strange error when an attribute should be a method but it is not
https://bugs.launchpad.net/bugs/312761
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