Hi experts !

I am struggling with Pylint with an issue that might be a problem coming from my code. Since I am relatively new to python (~1year) I would like to have your input on the matter.

I am trying to split a big python project I am doing for my company into several packages, allowing me to update each part without impacting the others. Doing that, we decided to go with Jenkins to improve our code quality which lead me to implement pylint for code violations checks.

Currently my build process is the following :

- Create a new virtualenv with Python version 2.7.6

- Install all dependencies needed by my package

- Download the last version of the package from the master branch in our internal gitlab

- Run nosetests with coverage reports

- Run pylint and export the result to have some violations reports in Jenkins.

At first I had a lot of pylint errors since I wasn't installing all dependencies, resulting in something like 200 import errors ... Now it is reduced to some 60 errors but when I look a the build output log, I can see that pylint is actually crashing in the middle of the process.

************* Module company.project.core.security.app
company/project/core/security/app.py:1: [C0111(missing-docstring), ] Missing module docstring
load_entry_point('pylint==1.2.1', 'console_scripts', 'pylint')()
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/pylint/__init__.py", line 21, in run_pylint
    Run(sys.argv[1:])
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/pylint/lint.py", line 1051, in __init__
    linter.check(args)
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/pylint/lint.py", line 626, in check
    self.check_astroid_module(astroid, walker, rawcheckers, tokencheckers)
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/pylint/lint.py", line 712, in check_astroid_module
    walker.walk(astroid)
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/pylint/utils.py", line 715, in walk
    self.walk(child)
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/pylint/utils.py", line 712, in walk
    cb(astroid)
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/pylint/checkers/imports.py", line 269, in visit_from
    self._add_imported_module(node, '%s.%s' % (importedmodnode.name, name))
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/pylint/checkers/imports.py", line 302, in _add_imported_module
    importedmodname = get_module_part(importedmodname)
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/logilab/common/modutils.py", line 352, in get_module_part
    path=path, context_file=context_file)
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/logilab/common/modutils.py", line 297, in file_from_modpath
    return _file_from_modpath(modpath, path, context)
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/logilab/common/modutils.py", line 556, in _file_from_modpath
    mtype, mp_filename = _module_file(modpath, path)
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/logilab/common/modutils.py", line 636, in _module_file
    return _search_zip(modpath, pic)[:2]
  File "/var/lib/jenkins/.pyenv/versions/2.7.6/lib/python2.7/site-packages/logilab/common/modutils.py", line 577, in _search_zip
    raise ImportError('No module named %s' % '.'.join(modpath))
ImportError: No module named project

This is how my package is constructed :

company/

-- __init__.py

-- project/

-- __init__.py

-- core/

-- __init__.py

-- app.py

-- security/

-- __init__.py

-- app.py

In company.project.core.security.app I am trying to import company.project.core.app which contains some BaseClass for my project using:

from ..app import BaseApplication

This is working fine with python, although pylint is crying out loud on this specific line. I tried to replace the relative import by core.app which worked fine with pylint but my code is not working anymore. I tried also to use the full path (company.project.core.app) but I have the exact same import error.

Be aware that both company and project are just namespace packages.

Also I am forced to use the path to run pylint because it looks like my top-level folder is not a package (even if it contains a __init__ file).

pylint company.project.core

No module named project.core (fatal)

pylint company/project/core is working.

When I try to run pylint directly from the top-level package, I have the exact same result as from the path.

A workaround I can try is to install the package before running pylint on it but I reckon since my cwd is supposed to be added to the path I can't see how it would help (although I have other company packages installed).

What do you think I should do ? Is my design a poorly chosen one and I don't have any solution ?

Thanks,

François