[code-quality] Lots of E1101 in standard modules after upgrading pylint to 1.4.0

[Paul Smith]

On Wed, 2014-11-26 at 02:03 -0500, Paul Smith wrote:

Forgot to say, I'm running on GNU/Linux Ubuntu GNOME 14.10 and I've
built all these tools (including python) myself from source.

> Hi all; I just upgraded to a newer version of pylint and now I'm seeing
> many spurious E1101 errors.
> 
> Before I was using:
>       * Python 2.7.6
>       * Pylint 1.1.0
>       * Astroid 1.0.1
>       * logilab-common 0.61.0
> 
> Now I've upgraded to:
>       * Python 2.7.8
>       * Pylint 1.4.0
>       * Astroid 1.3.2
>       * logilab-common 0.63.0
> 
> Everything about this new install appears to work fine, EXCEPT pylint.
> 
> I'm seeing tons of strange E1101 error on standard modules, like
> time.sleep() and others (readline, etc.)  For example:
> 
> $ cat sl.py
> import time
> time.sleep(1)
> 
> $ python sl.py
> <sleeps for 1s successfully>
> 
> $ pylint sl.py
> ************* Module sl
> C:  1, 0: Missing module docstring (missing-docstring)
> E:  2, 0: Module 'time' has no 'sleep' member (no-member)
> 
> If I run this with my old setup (older python/pylint/etc.), it doesn't
> complain at all.  Why am I seeing this invalid error?

By "at all" I mean it doesn't complain about time.sleep(); of course I
still get the missing docstring message in the old version :-).

Looking at this it seems like all the members which are loaded from a
shared library (e.g., lib/python2.7/lib-dynload/time.so etc.) have this
problem: I see it with datetime, readline, some socket stuff, etc.

Did I break something with my installation of python or one of the
packages?  How does pylint normally discover module members when the
implementation is in C rather than python?