Possible bug: False negative for W0613 on function member '__exit__'

Hi, the following file misses to produce W0613 (unused argument) for the three exc_* arguments of member function __exit__():
class MyContextManager(object): """dummy docstring"""
def __enter__(self): pass
def __exit__(self, exc_type, exc_val, exc_tb): return False
def func1(self, exc_type, exc_val, exc_tb): """dummy docstring""" return False
def __func2__(self, exc_type, exc_val, exc_tb): return False
func1() and __func__2() which have just been added to see how pylint behaves for them, correctly produce W0613 for all three exc_* arguments.
I am not aware of any pylint option that influences the specific behavior of pylint w.r.t. __exit__() and unused arguments.
My pylint config file is the default generated one, except for a few changes for metrics related messages, and one change in naming conventions for modules.
Versions: pylint 1.1.0, astroid 1.0.1, common 0.61.0 Python 2.6.8 (unknown, Sep 27 2013, 16:11:04) [GCC 4.3.4 [gcc-4_3-branch revision 152973]]
When searching the issues database for 'W0613' and '__exit__' I did not find any existing bugs on this behavior.
Please let me know whether this should be considered a bug and whether you want me to open an issue for it.
Regards Andy

On 24 March 2014 17:06, Andreas Maier andreas.r.maier@gmx.de wrote:
Hi, the following file misses to produce W0613 (unused argument) for the three exc_* arguments of member function __exit__():
For me, this is a feature!
Python force you to define the __exit__ method with those arguments and is not the user who defines method with extra / unused arguments.
In many cased I don't use the exit arguments and they I would have to add fake references to those arguments to comply with pylint new warnings.
participants (2)
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Adi Roiban
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Andreas Maier