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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Sun, 16 Jun 2013 14:33:17 -0600
Subject: Re: Timsort in Cpython
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On Sat, Jun 15, 2013 at 10:05 PM,  <alphonse23@gmail.com> wrote:
> Yes I've read it. Very interesting read. There are other resources too on=
line that make it very clear, for instance the wikipedia articles is pretty=
 good.
>
> Though, if anyone would be interested in helping me out further -- though=
 by all means, I'm not lazy, I can figure it myself. But, I wanted to pass =
in variables into listsort and watch timsort work line by line in gdb.
>
> listsort(PyListObject *self, PyObject *args, PyObject *kwds)
>
> I've never worked with Cpython source before, but it looks like PyObject =
is just some type of general strut.. I think anyway. How does python repres=
ent a list of ints in source? and what are the two second arguments for, as=
suming the first is the list strut.

A PyObject* generally references any Python object.  The subtype
PyListObject* more specifically references a Python list.  The above
signature corresponds to this Python function signature:

    def listsort(self, *args, **kwds):

The first argument self is the list object to be operated on.  The
second argument args is a Python tuple containing any other positional
arguments that were passed into the method.  The third argument kwds
is a Python dict containing any keyword arguments that were passed
into the method.