On Wed, 2014-11-26 at 22:06 +0100, Torsten Marek wrote:
> Hm, this might be a problem with standard library detection on with
> self-built Python installations.
> Can you give me the output of:
> >>> import sys
> >>> sys.path
> >>> from astroid import modutils
> >>> modutils.STD_LIB_DIRS
> >>> modutils.is_standard_module('time')
See below. I had a few minutes to play with this and I discovered that
the version of Python and the version of logilab-common don't matter.
If I keep Python 2.7.8 and logilab-common 0.63.0 but down-rev pylint to
1.1.0 and astroid to 1.0.1, then things start to work again.
However if I upgrade EITHER (or both) of pylint (to 1.4.0) or astroid
(to 1.3.2) then I see the bad behavior. That seems odd to me, but
that's what I see.
Here's the output you asked for from the failing install (this uses
pylint 1.1.0 and astroid 1.3.2):
Python 2.7.8 (default, Nov 25 2014, 22:45:58)
[GCC 4.9.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import sys
>>> sys.path
['', '/opt/python/lib/python2.7/site-packages/setuptools-7.0-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/docopt-0.6.2-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/paramiko-1.15.1-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/ecdsa-0.11-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/scp-0.8.0-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/boto-2.34.0-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/logilab_common-0.63.0-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/six-1.8.0-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/astroid-1.3.2-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/pylint-1.1.0-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/requests-2.4.3-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/selenium-2.44.0-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/oauthlib-0.7.2-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/requests_oauthlib-0.4.2-py2.7.egg',
'/opt/python/lib/python2.7/site-packages/jira_python-0.16-py2.7.egg',
'/opt/python/lib/python27.zip', '/opt/python/lib/python2.7',
'/opt/python/lib/python2.7/plat-linux2', '/opt/python/lib/python2.7/lib-tk',
'/opt/python/lib/python2.7/lib-old',
'/opt/python/x86_64-linux/lib/python2.7/lib-dynload',
'/opt/python/lib/python2.7/site-packages',
'/opt/python/x86_64-linux/lib/python2.7/site-packages']
>>> from astroid import modutils
>>> modutils.STD_LIB_DIRS
['/opt/python/lib/python2.7', '/opt/python/lib/python2.7']
>>> modutils.is_standard_module('time')
False
Hm. Why are both paths in STD_LIB_DIRS the same? Should one of them be
the execprefix path?
Aha!
If I reset STD_LIB_DIRS like this:
>>> modutils.STD_LIB_DIRS = ['/opt/python/lib/python2.7',
'/opt/python/x86_64-linux/lib/python2.7']
Then I get:
>>> modutils.is_standard_module('time')
True
So the problem appears to be that when I install Python I'm separating
prefix and exec_prefix, and astroid is not grokking that:
>>> sys.prefix
'/opt/python'
>>> sys.exec_prefix
'/opt/python/x86_64-linux'
> 2014-11-26 15:41 GMT+01:00 Paul Smith
> <p...@mad-scientist.net>:
> 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?
>
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>
>
>
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