[Python-projects] Suggestion about E1101 Instance of 'None' has no 'get' member

[Sylvain Thénault]

On Tuesday 12 December à 13:38, Barry Scott wrote:
> I see a lot of E1101 for classes like this:
> 
> class Foo:
>     def __init__( self ):
>        self.some_object = None
> 
>     def setSome( self, obj ):
>        self.some_object = obj
> 
>     def useSome( self ):
>        self.some_object.someMethod()
> 
> 
> pylint will complain about the call to someMethod.

which pylint/astng version are you using ? I don't get any E1101 With your code 
sample (the setSome method introduce an ambiguity in the inference and
in that case pylint don't issue E1011).
 
> Is there a way to tell pylint that self.some_object is expected to have
> a certain type? If not is such a feature possible to implement?
> 
> I'm thinking about annotation like:
>        self.some_object = None # pylint: variable_type=Some
> 
> meaning that some_object is expected to be class Some.

this is certainly feasible at the astng level, the main difficulty being
that comments are not in the ast and so a preparsing of the module file
will be necessary (i think). Anyway we'll have to support this kind of
thing at some point...

-- 
Sylvain Thénault                               LOGILAB, Paris (France)
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