[code-quality] Adding python function arguments related customized rule in pylint

[Claudiu Popa]

Hi,

On Wed, Jul 1, 2015 at 12:40 PM, Ahirnish Pareek <ahirnish at arista.com> wrote:
> Hi all,
>
> I was going through the checkers/typecheck.py for reference but could not
> understand it concretely.
>
> I am basically unable to find how to retrieve arguments from Astng Function
> node.
>
> I am using visit_function() inside a checker class to visit all function
> nodes but not able to get list of arguments(and varargs and kwargs too).
>


You should access node.args (an Arguments) node, as seen below:

from astroid.test_utils import extract_node
n = extract_node('''
def test(a, *args, b=None, **kwargs):
   pass
''')
print(n.args.args, n.args.kwonlyargs, n.args.vararg, n.args.kwarg)


> Also, is there a function which returns <type function> if we pass Astng
> Function node to it?

Do you mean the equivalent of type(function) from Python?
You can try the new astroid.helpers.object_type from soon-to-be astroid 1.4:
https://bitbucket.org/logilab/astroid/src/3d3cb4d45368bc80b0e80d24d758d884a1ab4d17/astroid/helpers.py?at=default#cl-81


/Claudiu