pylint #107064 E1101 false positive: does not know about members added by class decorator [open]

When a class decorator adds a class member, pylint does not know
about it:

E: 8,14:A.argh: Instance of 'A' has no 'blurb' member

---- 8< ----
def mytag(cls):
cls.blurb = None
return cls

@mytag
class A(object):
def argh(self):
print self.blurb

prioritynormal
typebug
done in<not specified>
closed by<not specified>