pylint #8389 check Attribute access for undefined attributes [open]

Attribute access for undefined attributes is not as bad as for variables ; But maybe we should have an AttributeError warning in cases like this

class Attrs(object):
    """dummy class for wrong attribute access"""
AOU = Attrs()
AOU.number *= 1.3
del AOU.badattr

Compare this to test/input/func_undefined_var.py