On Saturday 28 August 2010 12:48:20 Jakub Zytka wrote:
> Hello
>
> I'm getting false positives in a, I confess, quite bizzare case
> (testcase below). Short story is that I have some dynamically generated
> python extension module (C++). I also have lots of tests in python and
> some of them are using the extension module. I run pylint and pytest on
> these tests and everything is ok up to a point:
> sometimes I'm unable to deliver this C++ extension module. In such case
> some of the tests fail pytest/pylint verification due to unresolved
> imports. I decided it's the best to use 'stub' extension module,
> written in python, when it is not possible to provide the C++ based
> one. Since the C++ module is dynamically generated and it contains lots
> of classes/functions it is not feasible to define then in the stub
> module. Instead, I decided to write a generic python module, which
> defines "everything". This works fine with python and pytest, but
> pylint still complains.
>
> I don't know if this behavior can be fixed in pylint. Any ideas how to
> deal with this problem (maybe mod.py could be written differently?)?
>
> Testcase:
> files:
>
> ------ mod.py -------
> import sys
>
> class FakeModule:
> def __getattr__(self, x):
> return None
>
> sys.modules[__name__] = FakeModule()
>
> ------ test.py -------
> from mod import Whatever
> import mod
> a = mod.Spam
> if Whatever is None and a is None:
> print 'wow! this works'
>
> "python test.py" output:
> wow! this works
>
> pylint's output:
>
> ************* Module test
> E0611: 1: No name 'Whatever' in module 'mod'
> E1101: 3: Module 'mod' has no 'Spam' member
pylint is a static code checker, so mod.py will not be executed, hence
no modification of sys.modules.
But the --init-hook option (see pylint --long-help) might help:
--init-hook=<code> Python code to execute, usually for sys.path
manipulation such as pygtk.require().
$ pylint --init-hook='print "QSDFSD"' example.py
QSDFSD
[...]
--
Emile Anclin <emile.anc...@logilab.fr>
http://www.logilab.fr/ http://www.logilab.org/
Informatique scientifique & et gestion de connaissances
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