Pylint: RuntimeError: Inconsistent hierarchy

Created on 21 Mar 2017  ·  58Comments  ·  Source: PyCQA/pylint

Steps to reproduce

  1. clone pylint & clone asteroid
  2. build both from source using setup.py install
  3. run pylint

Current behavior

throws error

ubuntu@ip-0000:~/scripts/pooja/ext-code/pylint$ pip list | grep astroid
DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning.
astroid (1.5.0)
ubuntu@ip-0000:~/scripts/pooja/ext-code/pylint$ pip list | grep pylint 
DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning.
pylint (1.7.0, /usr/local/lib/python2.7/dist-packages/pylint-1.7.0-py2.7.egg)
ubuntu@ip-00000:~/scripts/pooja/ext-code/pylint$ cd /var/lib/jenkins/jobs/CI_SyntaxValidator_commons/workspace
(reverse-i-search)`inst': sudo python setup.py ^Cstall
ubuntu@ip-00000:/var/lib/jenkins/jobs/CI_SyntaxValidator_commons/workspace$ ^C
ubuntu@ip-0000:/var/lib/jenkins/jobs/CI_SyntaxValidator_commons/workspace$ pylint commons/
Traceback (most recent call last):
  File "/usr/local/bin/pylint", line 11, in <module>
    load_entry_point('pylint==1.7.0', 'console_scripts', 'pylint')()
  File "/usr/local/lib/python2.7/dist-packages/pylint-1.7.0-py2.7.egg/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/usr/local/lib/python2.7/dist-packages/pylint-1.7.0-py2.7.egg/pylint/lint.py", line 1220, in __init__
    linter.load_default_plugins()
  File "/usr/local/lib/python2.7/dist-packages/pylint-1.7.0-py2.7.egg/pylint/lint.py", line 453, in load_default_plugins
    checkers.initialize(self)
  File "/usr/local/lib/python2.7/dist-packages/pylint-1.7.0-py2.7.egg/pylint/checkers/__init__.py", line 114, in initialize
    register_plugins(linter, __path__[0])
  File "/usr/local/lib/python2.7/dist-packages/pylint-1.7.0-py2.7.egg/pylint/utils.py", line 992, in register_plugins
    module = modutils.load_module_from_file(join(directory, filename))
  File "/usr/local/lib/python2.7/dist-packages/astroid-1.5.0-py2.7.egg/astroid/modutils.py", line 272, in load_module_from_file
    return load_module_from_modpath(modpath, path, use_sys)
  File "/usr/local/lib/python2.7/dist-packages/astroid-1.5.0-py2.7.egg/astroid/modutils.py", line 233, in load_module_from_modpath
    module = imp.load_module(curname, mp_file, mp_filename, mp_desc)
  File "/usr/local/lib/python2.7/dist-packages/pylint-1.7.0-py2.7.egg/pylint/checkers/python3.py", line 100, in <module>
    class Python3Checker(checkers.BaseChecker):
  File "/usr/local/lib/python2.7/dist-packages/pylint-1.7.0-py2.7.egg/pylint/checkers/python3.py", line 501, in Python3Checker
    'sys.version_info < (3, 0)',
  File "/usr/local/lib/python2.7/dist-packages/astroid-1.5.0-py2.7.egg/astroid/node_classes.py", line 624, in repr_tree
    _repr_tree(self, result, set())
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 210, in wrapper
  File "/usr/local/lib/python2.7/dist-packages/astroid-1.5.0-py2.7.egg/astroid/node_classes.py", line 613, in _repr_node
    depth)
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 210, in wrapper
  File "/usr/local/lib/python2.7/dist-packages/astroid-1.5.0-py2.7.egg/astroid/node_classes.py", line 613, in _repr_node
    depth)
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 210, in wrapper
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 191, in dispatch
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 142, in _find_impl
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 130, in _compose_mro
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 84, in _c3_mro
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 88, in _c3_mro
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 39, in _c3_merge
RuntimeError: Inconsistent hierarchy

Expected behavior

pylint --version output

ubuntu@ip-0000:/var/lib/workspace$ pip list | grep pylint
DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning.
pylint (1.7.0, /usr/local/lib/python2.7/dist-packages/pylint-1.7.0-py2.7.egg)
ubuntu@ip-0000:/var/lib/workspace$ pip list | grep astroid
DEPRECATION: The default format will switch to columns in the future. You can use --format=(legacy|columns) (or define a format=(legacy|columns) in your pip.conf under the [list] section) to disable this warning.
astroid (1.5.0)
bug
Source
picture p00j4
👍2

Most helpful comment

@p00j4, you can just pip install -U enum34 to upgrade enum34 to the latest version, which is easier than git cloning the latest astroid.

You said "i'm trying to understand what clues taken you in digging it & make out the enum34>=1.1.3".

I had Pylint working fine on my Mac laptop but giving "Inconsistent Hierarchy" on a CentOS 7 VM, so first I checked that the versions of pylint, astroid and singledispatch were the same on both systems, which they were, so I suspected that the version of another Python module dependency was different.

Then I added some logging near the exception:

$ diff -c singledispatch.py.original lib/python2.7/site-packages/singledispatch.py
*** singledispatch.py.original  2017-05-16 10:54:33.000000000 +1000
--- lib/python2.7/site-packages/singledispatch.py   2017-05-16 10:54:02.000000000 +1000
***************
*** 36,41 ****
--- 36,43 ----
              else:
                  break
          if not candidate:
+             import sys
+             sys.stderr.write("candidate: %s\n" % candidate)
              raise RuntimeError("Inconsistent hierarchy")
          result.append(candidate)

which resulted in:

$ pylint --version
candidate: <enum 'Enum'>
...
line 41, in _c3_merge
    raise RuntimeError("Inconsistent hierarchy")
RuntimeError: Inconsistent hierarchy

which gave the clue that there was a problem with the "Enum" class from the "enum" module.

picture wettenhj on 16 May 2017
👍3 ❤1

All 58 comments

Try doing this:

  1. uninstall pylint and astroid with pip:
    pip uninstall astroid
    pip uninstall pylint

  2. Verify that they were really uninstalled using pip list

  3. Install astroid using pip:
    pip install git+https://github.com/PyCQA/astroid.git@master
    or
    pip install -e /path/to/astroid/repo

  4. Install pylint using pip:
    pip install git+https://github.com/PyCQA/pylint.git@master
    or
    pip install -e /path/to/pylint/repo

degustaf picture degustaf on 21 Mar 2017

thanks @degustaf but now it fails with

Traceback (most recent call last):
  File "/var/lib/jenkins/workspace/venv/bin/pylint", line 11, in <module>
    load_entry_point('pylint==1.7.0', 'console_scripts', 'pylint')()
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/lint.py", line 1268, in __init__
    linter.load_config_file()
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/config.py", line 654, in load_config_file
    self.global_set_option(option, value)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/config.py", line 560, in global_set_option
    self._all_options[opt].set_option(opt, value)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/lint.py", line 514, in set_option
    self._load_reporter()
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/lint.py", line 478, in _load_reporter
    modutils.get_module_part(qname))
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/modutils.py", line 437, in get_module_part
    context_file=context_file)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/modutils.py", line 338, in file_from_modpath
    return file_info_from_modpath(modpath, path, context_file).location
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/modutils.py", line 383, in file_info_from_modpath
    return _spec_from_modpath(modpath, path, context)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/modutils.py", line 603, in _spec_from_modpath
    found_spec = spec.find_spec(modpath, path)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/interpreter/_import/spec.py", line 279, in find_spec
    submodule_path or path)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/interpreter/_import/spec.py", line 246, in _find_spec_with_path
    raise ImportError('No module named %s' % '.'.join(module_parts))
ImportError: No module named html
p00j4 picture p00j4 on 22 Mar 2017

update:
the same problem exists if done normally (without virtual env)

[email protected]:~/scripts/pooja/ext-code$ pylint --version
Traceback (most recent call last):
  File "/usr/local/bin/pylint", line 11, in <module>
    load_entry_point('pylint==1.7.0', 'console_scripts', 'pylint')()
  File "/usr/local/lib/python2.7/dist-packages/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/usr/local/lib/python2.7/dist-packages/pylint/lint.py", line 1220, in __init__
    linter.load_default_plugins()
  File "/usr/local/lib/python2.7/dist-packages/pylint/lint.py", line 453, in load_default_plugins
    checkers.initialize(self)
  File "/usr/local/lib/python2.7/dist-packages/pylint/checkers/__init__.py", line 114, in initialize
    register_plugins(linter, __path__[0])
  File "/usr/local/lib/python2.7/dist-packages/pylint/utils.py", line 992, in register_plugins
    module = modutils.load_module_from_file(join(directory, filename))
  File "/usr/local/lib/python2.7/dist-packages/astroid/modutils.py", line 272, in load_module_from_file
    return load_module_from_modpath(modpath, path, use_sys)
  File "/usr/local/lib/python2.7/dist-packages/astroid/modutils.py", line 233, in load_module_from_modpath
    module = imp.load_module(curname, mp_file, mp_filename, mp_desc)
  File "/usr/local/lib/python2.7/dist-packages/pylint/checkers/python3.py", line 100, in <module>
    class Python3Checker(checkers.BaseChecker):
  File "/usr/local/lib/python2.7/dist-packages/pylint/checkers/python3.py", line 501, in Python3Checker
    'sys.version_info < (3, 0)',
  File "/usr/local/lib/python2.7/dist-packages/astroid/node_classes.py", line 624, in repr_tree
    _repr_tree(self, result, set())
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 210, in wrapper
  File "/usr/local/lib/python2.7/dist-packages/astroid/node_classes.py", line 613, in _repr_node
    depth)
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 210, in wrapper
  File "/usr/local/lib/python2.7/dist-packages/astroid/node_classes.py", line 613, in _repr_node
    depth)
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 210, in wrapper
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 191, in dispatch
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 142, in _find_impl
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 130, in _compose_mro
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 84, in _c3_mro
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 88, in _c3_mro
  File "build/bdist.linux-x86_64/egg/singledispatch.py", line 39, in _c3_merge
RuntimeError: Inconsistent hierarchy

but if done inside virtual environment, the error changes to this:

Traceback (most recent call last):
  File "/var/lib/jenkins/workspace/venv/bin/pylint", line 11, in <module>
    load_entry_point('pylint==1.7.0', 'console_scripts', 'pylint')()
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/lint.py", line 1268, in __init__
    linter.load_config_file()
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/config.py", line 654, in load_config_file
    self.global_set_option(option, value)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/config.py", line 560, in global_set_option
    self._all_options[opt].set_option(opt, value)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/lint.py", line 514, in set_option
    self._load_reporter()
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/pylint/lint.py", line 478, in _load_reporter
    modutils.get_module_part(qname))
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/modutils.py", line 437, in get_module_part
    context_file=context_file)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/modutils.py", line 338, in file_from_modpath
    return file_info_from_modpath(modpath, path, context_file).location
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/modutils.py", line 383, in file_info_from_modpath
    return _spec_from_modpath(modpath, path, context)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/modutils.py", line 603, in _spec_from_modpath
    found_spec = spec.find_spec(modpath, path)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/interpreter/_import/spec.py", line 279, in find_spec
    submodule_path or path)
  File "/var/lib/jenkins/workspace/venv/local/lib/python2.7/site-packages/astroid/interpreter/_import/spec.py", line 246, in _find_spec_with_path
    raise ImportError('No module named %s' % '.'.join(module_parts))
ImportError: No module named html
p00j4 picture p00j4 on 22 Mar 2017

@PCManticore any hints would be helpful

p00j4 picture p00j4 on 27 Mar 2017

@p00j4 Note that it's actually a RuntimeError from standard/backported library. Is there any chance that your backported library is not the same version that's used in our testing?

rogalski picture rogalski on 27 Mar 2017

@p00j4 Can you still reproduce this using the freshly released pylint 1.7?

PCManticore picture PCManticore on 15 Apr 2017

@PCManticore I just installed 1.7 and am getting this issue, so yes it is also a problem with 1.7

EmSyndio picture EmSyndio on 15 Apr 2017

I also get the error. I just installed everything from pip.
pylint 1.7.1
python 2.7.12
astroid 1.5.2
singledispatch 3.4.0.3

$ pylint
Traceback (most recent call last):
  File "/usr/local/bin/pylint", line 11, in <module>
    sys.exit(run_pylint())
  File "/usr/local/lib/python2.7/dist-packages/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/usr/local/lib/python2.7/dist-packages/pylint/lint.py", line 1220, in __init__
    linter.load_default_plugins()
  File "/usr/local/lib/python2.7/dist-packages/pylint/lint.py", line 453, in load_default_plugins
    checkers.initialize(self)
  File "/usr/local/lib/python2.7/dist-packages/pylint/checkers/__init__.py", line 114, in initialize
    register_plugins(linter, __path__[0])
  File "/usr/local/lib/python2.7/dist-packages/pylint/utils.py", line 992, in register_plugins
    module = modutils.load_module_from_file(join(directory, filename))
  File "/usr/local/lib/python2.7/dist-packages/astroid/modutils.py", line 272, in load_module_from_file
    return load_module_from_modpath(modpath, path, use_sys)
  File "/usr/local/lib/python2.7/dist-packages/astroid/modutils.py", line 233, in load_module_from_modpath
    module = imp.load_module(curname, mp_file, mp_filename, mp_desc)
  File "/usr/local/lib/python2.7/dist-packages/pylint/checkers/python3.py", line 100, in <module>
    class Python3Checker(checkers.BaseChecker):
  File "/usr/local/lib/python2.7/dist-packages/pylint/checkers/python3.py", line 501, in Python3Checker
    'sys.version_info < (3, 0)',
  File "/usr/local/lib/python2.7/dist-packages/astroid/node_classes.py", line 624, in repr_tree
    _repr_tree(self, result, set())
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 210, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/usr/local/lib/python2.7/dist-packages/astroid/node_classes.py", line 613, in _repr_node
    depth)
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 210, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/usr/local/lib/python2.7/dist-packages/astroid/node_classes.py", line 613, in _repr_node
    depth)
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 210, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 191, in dispatch
    impl = _find_impl(cls, registry)
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 142, in _find_impl
    mro = _compose_mro(cls, registry.keys())
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 130, in _compose_mro
    return _c3_mro(cls, abcs=mro)
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 84, in _c3_mro
    other_c3_mros = [_c3_mro(base, abcs=abcs) for base in other_bases]
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 88, in _c3_mro
    [explicit_bases] + [abstract_bases] + [other_bases]
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 39, in _c3_merge
    raise RuntimeError("Inconsistent hierarchy")
RuntimeError: Inconsistent hierarchy
cburchert picture cburchert on 19 Apr 2017

My first time trying pylint last night and was very confused by this error.

(venv) n8henrie@NateAir:~/git/pycookiecheat $ pylint -h
Traceback (most recent call last):
  File "/Users/n8henrie/git/pycookiecheat/venv/bin/pylint", line 11, in <module>
    sys.exit(run_pylint())
  File "/Users/n8henrie/git/pycookiecheat/venv/lib/python3.6/site-packages/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/Users/n8henrie/git/pycookiecheat/venv/lib/python3.6/site-packages/pylint/lint.py", line 1268, in __init__
    linter.load_config_file()
  File "/Users/n8henrie/git/pycookiecheat/venv/lib/python3.6/site-packages/pylint/config.py", line 654, in load_config_file
    self.global_set_option(option, value)
  File "/Users/n8henrie/git/pycookiecheat/venv/lib/python3.6/site-packages/pylint/config.py", line 560, in global_set_option
    self._all_options[opt].set_option(opt, value)
  File "/Users/n8henrie/git/pycookiecheat/venv/lib/python3.6/site-packages/pylint/lint.py", line 514, in set_option
    self._load_reporter()
  File "/Users/n8henrie/git/pycookiecheat/venv/lib/python3.6/site-packages/pylint/lint.py", line 480, in _load_reporter
    reporter_class = getattr(module, class_name)
AttributeError: module 'html' has no attribute 'html'
(venv) n8henrie@NateAir:~/git/pycookiecheat $
(venv) n8henrie@NateAir:~/git/pycookiecheat $ pip freeze | grep -P -i '(pylint)|(astroid)'
astroid==1.5.2
pylint==1.7.1
(venv) n8henrie@NateAir:~/git/pycookiecheat $ python --version
Python 3.6.1

May help others find it to add the html part to the issue title, since that was I was fruitlessly searching for yesterday.

n8henrie picture n8henrie on 19 Apr 2017

I attempted to reproduce an issue and failed.

My steps we're as following:

  1. Verify version of virtualenv used
mac-mini:pylint-issue1388 rogalski$ python3 -m pip freeze | grep virtualenv
virtualenv==15.1.0
  1. Create virtualenv
mac-mini:pylint-issue1388 rogalski$ python3 -m virtualenv venv
Using base prefix '/usr/local/Cellar/python3/3.6.1/Frameworks/Python.framework/Versions/3.6'
New python executable in /Users/rogalski/pylint-issue1388/venv/bin/python3.6
Also creating executable in /Users/rogalski/pylint-issue1388/venv/bin/python
Installing setuptools, pip, wheel...done.
  1. Activate virtualenv
mac-mini:pylint-issue1388 rogalski$ source venv/bin/activate
(venv) mac-mini:pylint-issue1388 rogalski$
  1. Install latest pylint in venv
(venv) mac-mini:pylint-issue1388 rogalski$ pip install pylint
Collecting pylint
  Using cached pylint-1.7.1-py2.py3-none-any.whl
Collecting isort>=4.2.5 (from pylint)
  Using cached isort-4.2.5-py2.py3-none-any.whl
Requirement already satisfied: six in ./venv/lib/python3.6/site-packages (from pylint)
Collecting astroid>=1.5.1 (from pylint)
  Using cached astroid-1.5.2-py2.py3-none-any.whl
Collecting mccabe (from pylint)
  Using cached mccabe-0.6.1-py2.py3-none-any.whl
Collecting wrapt (from astroid>=1.5.1->pylint)
Collecting lazy-object-proxy (from astroid>=1.5.1->pylint)
Installing collected packages: isort, wrapt, lazy-object-proxy, astroid, mccabe, pylint
Successfully installed astroid-1.5.2 isort-4.2.5 lazy-object-proxy-1.2.2 mccabe-0.6.1 pylint-1.7.1 wrapt-1.10.10
  1. Run pylint --version from vnv
(venv) mac-mini:pylint-issue1388 rogalski$ pylint --version
No config file found, using default configuration
pylint 1.7.1, 
astroid 1.5.2
Python 3.6.1 (default, Mar 23 2017, 21:03:47) 
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)]

Can anyone of reporters seek for any discrepancies between my reproduction steps and their environment?

In case it's relevant, I'm on macOS 10.12.4 (16E195).

rogalski picture rogalski on 20 Apr 2017

Steps for Python 2.7:

mac-mini:pylint-issue1388 rogalski$ python -m pip freeze | grep virtualenv
virtualenv==15.1.0
mac-mini:pylint-issue1388 rogalski$ python -m virtualenv venv27
New python executable in /Users/rogalski/pylint-issue1388/venv27/bin/python2.7
Also creating executable in /Users/rogalski/pylint-issue1388/venv27/bin/python
Installing setuptools, pip, wheel...done.
mac-mini:pylint-issue1388 rogalski$ source venv27/bin/activate
(venv27) mac-mini:pylint-issue1388 rogalski$ pip install pylint
Collecting pylint
  Using cached pylint-1.7.1-py2.py3-none-any.whl
Requirement already satisfied: six in ./venv27/lib/python2.7/site-packages (from pylint)
Collecting isort>=4.2.5 (from pylint)
  Using cached isort-4.2.5-py2.py3-none-any.whl
Collecting singledispatch; python_version < "3.4" (from pylint)
  Using cached singledispatch-3.4.0.3-py2.py3-none-any.whl
Collecting mccabe (from pylint)
  Using cached mccabe-0.6.1-py2.py3-none-any.whl
Collecting configparser; python_version == "2.7" (from pylint)
Collecting backports.functools-lru-cache; python_version == "2.7" (from pylint)
  Using cached backports.functools_lru_cache-1.3-py2.py3-none-any.whl
Collecting astroid>=1.5.1 (from pylint)
  Using cached astroid-1.5.2-py2.py3-none-any.whl
Collecting wrapt (from astroid>=1.5.1->pylint)
Collecting lazy-object-proxy (from astroid>=1.5.1->pylint)
Collecting enum34; python_version < "3.4" (from astroid>=1.5.1->pylint)
  Using cached enum34-1.1.6-py2-none-any.whl
Installing collected packages: isort, singledispatch, mccabe, configparser, backports.functools-lru-cache, wrapt, lazy-object-proxy, enum34, astroid, pylint
Successfully installed astroid-1.5.2 backports.functools-lru-cache-1.3 configparser-3.5.0 enum34-1.1.6 isort-4.2.5 lazy-object-proxy-1.2.2 mccabe-0.6.1 pylint-1.7.1 singledispatch-3.4.0.3 wrapt-1.10.10
(venv27) mac-mini:pylint-issue1388 rogalski$ pylint --version
No config file found, using default configuration
pylint 1.7.1, 
astroid 1.5.2
Python 2.7.13 (default, Dec 18 2016, 21:02:40) 
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)]
(venv27) mac-mini:pylint-issue1388 rogalski$
rogalski picture rogalski on 20 Apr 2017

Same here.

Python2

#!/bin/bash
# test.sh
python2 --version
python2 -m pip freeze | grep virtualenv
python2 -m virtualenv venv
venv/bin/python -m pip install --upgrade pylint
venv/bin/python -m pip freeze | grep pylint
venv/bin/pylint --version

n8henrie@NateAir:~ [1]$ bash test.sh
Python 2.7.13
virtualenv==15.1.0
New python executable in /Users/n8henrie/venv/bin/python2.7
Also creating executable in /Users/n8henrie/venv/bin/python
Installing setuptools, pip, wheel...done.
Collecting pylint
  Using cached pylint-1.7.1-py2.py3-none-any.whl
Requirement already up-to-date: six in ./venv/lib/python2.7/site-packages (from pylint)
Collecting isort>=4.2.5 (from pylint)
Collecting singledispatch; python_version < "3.4" (from pylint)
  Using cached singledispatch-3.4.0.3-py2.py3-none-any.whl
Collecting mccabe (from pylint)
  Using cached mccabe-0.6.1-py2.py3-none-any.whl
Collecting configparser; python_version == "2.7" (from pylint)
Collecting backports.functools-lru-cache; python_version == "2.7" (from pylint)
  Using cached backports.functools_lru_cache-1.3-py2.py3-none-any.whl
Collecting astroid>=1.5.1 (from pylint)
  Using cached astroid-1.5.2-py2.py3-none-any.whl
Collecting wrapt (from astroid>=1.5.1->pylint)
Collecting lazy-object-proxy (from astroid>=1.5.1->pylint)
Collecting enum34; python_version < "3.4" (from astroid>=1.5.1->pylint)
  Using cached enum34-1.1.6-py2-none-any.whl
Installing collected packages: isort, singledispatch, mccabe, configparser, backports.functools-lru-cache, wrapt, lazy-object-proxy, enum34, astroid, pylint
Successfully installed astroid-1.5.2 backports.functools-lru-cache-1.3 configparser-3.5.0 enum34-1.1.6 isort-4.2.5 lazy-object-proxy-1.2.2 mccabe-0.6.1 pylint-1.7.1 singledispatch-3.4.0.3 wrapt-1.10.10
pylint==1.7.1
Traceback (most recent call last):
  File "venv/bin/pylint", line 11, in <module>
    sys.exit(run_pylint())
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/pylint/lint.py", line 1268, in __init__
    linter.load_config_file()
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/pylint/config.py", line 654, in load_config_file
    self.global_set_option(option, value)
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/pylint/config.py", line 560, in global_set_option
    self._all_options[opt].set_option(opt, value)
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/pylint/lint.py", line 514, in set_option
    self._load_reporter()
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/pylint/lint.py", line 478, in _load_reporter
    modutils.get_module_part(qname))
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/astroid/modutils.py", line 437, in get_module_part
    context_file=context_file)
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/astroid/modutils.py", line 338, in file_from_modpath
    return file_info_from_modpath(modpath, path, context_file).location
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/astroid/modutils.py", line 383, in file_info_from_modpath
    return _spec_from_modpath(modpath, path, context)
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/astroid/modutils.py", line 603, in _spec_from_modpath
    found_spec = spec.find_spec(modpath, path)
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/astroid/interpreter/_import/spec.py", line 279, in find_spec
    submodule_path or path)
  File "/Users/n8henrie/venv/lib/python2.7/site-packages/astroid/interpreter/_import/spec.py", line 246, in _find_spec_with_path
    raise ImportError('No module named %s' % '.'.join(module_parts))
ImportError: No module named html

Python3

n8henrie@NateAir:~ [1]$ cat test.sh
#!/bin/bash
# test.sh
python3 -m venv venv
venv/bin/python --version
venv/bin/python -m pip install --upgrade pylint
venv/bin/python -m pip freeze | grep pylint
venv/bin/pylint --version
n8henrie@NateAir:~ [1]$ bash test.sh
Python 3.6.1
Collecting pylint
  Using cached pylint-1.7.1-py2.py3-none-any.whl
Collecting six (from pylint)
Collecting isort>=4.2.5 (from pylint)
Collecting astroid>=1.5.1 (from pylint)
  Using cached astroid-1.5.2-py2.py3-none-any.whl
Collecting mccabe (from pylint)
  Using cached mccabe-0.6.1-py2.py3-none-any.whl
Collecting wrapt (from astroid>=1.5.1->pylint)
Collecting lazy-object-proxy (from astroid>=1.5.1->pylint)
Installing collected packages: six, isort, wrapt, lazy-object-proxy, astroid, mccabe, pylint
Successfully installed astroid-1.5.2 isort-4.2.5 lazy-object-proxy-1.2.2 mccabe-0.6.1 pylint-1.7.1 six-1.10.0 wrapt-1.10.10
pylint==1.7.1
Traceback (most recent call last):
  File "venv/bin/pylint", line 11, in <module>
    sys.exit(run_pylint())
  File "/Users/n8henrie/venv/lib/python3.6/site-packages/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/Users/n8henrie/venv/lib/python3.6/site-packages/pylint/lint.py", line 1268, in __init__
    linter.load_config_file()
  File "/Users/n8henrie/venv/lib/python3.6/site-packages/pylint/config.py", line 654, in load_config_file
    self.global_set_option(option, value)
  File "/Users/n8henrie/venv/lib/python3.6/site-packages/pylint/config.py", line 560, in global_set_option
    self._all_options[opt].set_option(opt, value)
  File "/Users/n8henrie/venv/lib/python3.6/site-packages/pylint/lint.py", line 514, in set_option
    self._load_reporter()
  File "/Users/n8henrie/venv/lib/python3.6/site-packages/pylint/lint.py", line 480, in _load_reporter
    reporter_class = getattr(module, class_name)
AttributeError: module 'html' has no attribute 'html'
n8henrie picture n8henrie on 21 Apr 2017
👍1

@n8henrie can you check what is the value of output-format from your pylintrc file? I presume it is html. The html reporter does not exist any longer in pylint 1.7.

PCManticore picture PCManticore on 21 Apr 2017
👍1

This is a new project with which I haven't used pylint previously that I can recall, but I wonder if I have some global config somewhere that could be causing the issue. I'll check when I get home.

On Apr 21, 2017, at 8:40 AM, Claudiu Popa notifications@github.com wrote:

@n8henrie can you check what is the value of output-format from your pylintrc file? I presume it is html. The html reporter does not exist any longer in pylint 1.7.

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n8henrie picture n8henrie on 21 Apr 2017

@PCManticore @n8henrie keep in mind that pylintrc may also come from other locations than project dir. This may be a source of confusion.

rogalski picture rogalski on 21 Apr 2017
👍2

@rogalski I'll sheepishly confess that I found a $HOME/.pylintrc, and removing it solves the issue for me. I guess I must have tried pylint at some point in the past and forgotten?

Anyway, thanks for helping me figure out such a simple issue!

n8henrie picture n8henrie on 22 Apr 2017

We still need a graceful error message and not this ugly crash.
Furthermore, we need to reproduce _Inconsistent Hierarchy_ crash.
@p00j4 @Leonidaz0r maybe you can help with that? I've added my reproduction steps few comments above.

rogalski picture rogalski on 22 Apr 2017

I just merged #1450 which should resolve isolated "AttributeError" / "no module" issue.

If someone of reporters could use versions form master branch and try to reproduce first issue (RuntimeError: Inconsistent hierarchy) I'd be grateful.

rogalski picture rogalski on 28 Apr 2017

@rogalski I am getting the same issue from master branch

pylint]# pip freeze | grep -P -i '(pylint)|(astroid)'
astroid==1.5.2
pylint==1.8.0
[root@Mgmt_334 pylint]# pylint
Traceback (most recent call last):
  File "/usr/bin/pylint", line 9, in <module>
    load_entry_point('pylint==1.8.0', 'console_scripts', 'pylint')()
  File "/usr/lib/python2.7/site-packages/pylint-1.8.0-py2.7.egg/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/usr/lib/python2.7/site-packages/pylint-1.8.0-py2.7.egg/pylint/lint.py", line 1228, in __init__
    linter.load_default_plugins()
  File "/usr/lib/python2.7/site-packages/pylint-1.8.0-py2.7.egg/pylint/lint.py", line 453, in load_default_plugins
    checkers.initialize(self)
  File "/usr/lib/python2.7/site-packages/pylint-1.8.0-py2.7.egg/pylint/checkers/__init__.py", line 114, in initialize
    register_plugins(linter, __path__[0])
  File "/usr/lib/python2.7/site-packages/pylint-1.8.0-py2.7.egg/pylint/utils.py", line 992, in register_plugins
    module = modutils.load_module_from_file(join(directory, filename))
  File "/usr/lib/python2.7/site-packages/astroid/modutils.py", line 272, in load_module_from_file
    return load_module_from_modpath(modpath, path, use_sys)
  File "/usr/lib/python2.7/site-packages/astroid/modutils.py", line 233, in load_module_from_modpath
    module = imp.load_module(curname, mp_file, mp_filename, mp_desc)
  File "/usr/lib/python2.7/site-packages/pylint-1.8.0-py2.7.egg/pylint/checkers/python3.py", line 100, in <module>
    class Python3Checker(checkers.BaseChecker):
  File "/usr/lib/python2.7/site-packages/pylint-1.8.0-py2.7.egg/pylint/checkers/python3.py", line 501, in Python3Checker
    'sys.version_info < (3, 0)',
  File "/usr/lib/python2.7/site-packages/astroid/node_classes.py", line 624, in repr_tree
    _repr_tree(self, result, set())
  File "/usr/lib/python2.7/site-packages/singledispatch.py", line 209, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/usr/lib/python2.7/site-packages/astroid/node_classes.py", line 613, in _repr_node
    depth)
  File "/usr/lib/python2.7/site-packages/singledispatch.py", line 209, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/usr/lib/python2.7/site-packages/astroid/node_classes.py", line 613, in _repr_node
    depth)
  File "/usr/lib/python2.7/site-packages/singledispatch.py", line 209, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/usr/lib/python2.7/site-packages/singledispatch.py", line 190, in dispatch
    impl = _find_impl(cls, registry)
  File "/usr/lib/python2.7/site-packages/singledispatch.py", line 141, in _find_impl
    mro = _compose_mro(cls, registry.keys())
  File "/usr/lib/python2.7/site-packages/singledispatch.py", line 129, in _compose_mro
    return _c3_mro(cls, abcs=mro)
  File "/usr/lib/python2.7/site-packages/singledispatch.py", line 83, in _c3_mro
    other_c3_mros = [_c3_mro(base, abcs=abcs) for base in other_bases]
  File "/usr/lib/python2.7/site-packages/singledispatch.py", line 87, in _c3_mro
    [explicit_bases] + [abstract_bases] + [other_bases]
  File "/usr/lib/python2.7/site-packages/singledispatch.py", line 38, in _c3_merge
    raise RuntimeError("Inconsistent hierarchy")
RuntimeError: Inconsistent hierarchy
ravidborse picture ravidborse on 2 May 2017

@rogalski its exact steps & i can reproduce all the time

  1. clone pylint & clone asteroid
  2. build both from source using setup.py install
  3. run pylint

however, i will recheck tonight & share the finding

p00j4 picture p00j4 on 2 May 2017

According to stacktrace, this code should be enough to trigger an issue.

import astroid
_ = [astroid.extract_node(x).repr_tree() for x in [
                'sys.version_info[0] == 2',
                'sys.version_info[0] < 3',
                'sys.version_info == (2, 7)',
                'sys.version_info <= (2, 7)',
                'sys.version_info < (3, 0)',
]]

It would be great to have this reproduced. Maybe step-by-step instruction that works in some Docker image?

rogalski picture rogalski on 2 May 2017

I tried pylint on Ubuntu 16.04 and I can report same problem as @p00j4 . I cannot even run 'pylint --version'.
Is there a support for ubuntu?
pip freeze gives following:
astroid==1.4.4
pylint==1.5.2

ivan2angelov picture ivan2angelov on 11 May 2017

@ivan2angelov There is nothing os-specific about Pylint.

By any chance you have installed it via apt-get and not pip? Maybe external installation tools handle dependencies improperly?

rogalski picture rogalski on 11 May 2017

I get AttributeError: module 'html' has no attribute 'html', when I try to run pylint --output-format=html. Other output formats work well.

sergeygrigorev picture sergeygrigorev on 12 May 2017

@unstope Yes, it's fixed via cb6e4523ce001012202e5767c8029fdfad21af1e and will be included in next release (not sure if it'll be available in 1.7.x or 1.8.0).

rogalski picture rogalski on 12 May 2017

Steps to reproduce RuntimeError: Inconsistent hierarchy (Python 2.7, CentOS 7.2):

Create a fresh virtualenv:

cd ~/virtualenvs; virtualenv test

Enter the virtualenv:

source ~/virtualenvs/test/bin/activate

Install pylint:

pip install pylint

which also installs pylint's dependencies, including singledispatch 3.4.0.3

Install an incompatible version of enum34:

pip install enum34==1.0.4

Now, running:

pylint --version

gives:

RuntimeError: Inconsistent hierarchy

Why?

This line of singledispatch: https://github.com/ambv/singledispatch/blob/master/singledispatch.py#L38

appears to assume that when "not candidate" is True, candidate has been set to None.

But with enum34 v1.0.4:

>>> import enum
>>> enum.version
(1, 0, 4)
>>> not enum.Enum
True

so if "candidate" is the "Enum" class, "not candidate" can be True, even when "candidate" is not None.

Why was an old version of enum34 in my PYTHONPATH? I created a virtualenv on CentOS 7.2, and allowed the virtualenv to access Python modules from my system Python installation, including enum34 v1.0.4.

On the CentOS 7.2 machine, I had the python-enum34-1.0.4-1.el7.noarch RPM installed. I don't recall installing it, but it appears to be a dependency of the python-cryptography-0.8.2-1.el7.x86_64 RPM, which I don't recall installing either.

wettenhj picture wettenhj on 12 May 2017
👍2

As it turned out, we we're all chasing well-known issue.

See referenced pull request for fix.

Right now it's job for @PCManticore to review and merge those fixes and ship new minor release.

rogalski picture rogalski on 13 May 2017
👍1

Doesn't the minimal astroid dependency version need to be bumped to 1.5.3 now (once it's released)?

dskrvk picture dskrvk on 14 May 2017

Yes, it will be bumped.

Wysłane z iPhone'a

Dnia 14.05.2017 o godz. 23:30 Dmitry Erastov notifications@github.com napisał(a):

Doesn't the minimal astroid version need to be bumped to 1.5.3 now (once it's released)?

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rogalski picture rogalski on 15 May 2017

thank you @rogalski 👍 the fix works, just confirmed.
i'm trying to understand what clues taken you in digging it & make out the enum34>=1.1.3 as fix.. its small but hard to find, your hint suggestions will help finding root cause next time

  • waiting it to be tagged in pip version so becomes easy to install.
p00j4 picture p00j4 on 15 May 2017

Users, please make sure to uninstall existing pylint & astroid versions before installing new
this should work 

pip uninstall pylint;  pip uninstall astroid
pip uninstall pylint;  pip uninstall astroid                 (ensure they are uninstalled)
git clone https://github.com/PyCQA/pylint.git
cd pylint
python setup.py install
git clone https://github.com/PyCQA/astroid.git
cd astroid
python setup.py install
p00j4 picture p00j4 on 15 May 2017

@p00j4 Changelog entry in PyCQA/astroid@56db400412fb36b5c2bbdb9ffb18b7c007f19b49 contains all references you need to understand what was happening here.

rogalski picture rogalski on 15 May 2017

@p00j4, you can just pip install -U enum34 to upgrade enum34 to the latest version, which is easier than git cloning the latest astroid.

You said "i'm trying to understand what clues taken you in digging it & make out the enum34>=1.1.3".

I had Pylint working fine on my Mac laptop but giving "Inconsistent Hierarchy" on a CentOS 7 VM, so first I checked that the versions of pylint, astroid and singledispatch were the same on both systems, which they were, so I suspected that the version of another Python module dependency was different.

Then I added some logging near the exception:

$ diff -c singledispatch.py.original lib/python2.7/site-packages/singledispatch.py
*** singledispatch.py.original  2017-05-16 10:54:33.000000000 +1000
--- lib/python2.7/site-packages/singledispatch.py   2017-05-16 10:54:02.000000000 +1000
***************
*** 36,41 ****
--- 36,43 ----
              else:
                  break
          if not candidate:
+             import sys
+             sys.stderr.write("candidate: %s\n" % candidate)
              raise RuntimeError("Inconsistent hierarchy")
          result.append(candidate)

which resulted in:

$ pylint --version
candidate: <enum 'Enum'>
...
line 41, in _c3_merge
    raise RuntimeError("Inconsistent hierarchy")
RuntimeError: Inconsistent hierarchy

which gave the clue that there was a problem with the "Enum" class from the "enum" module.

wettenhj picture wettenhj on 16 May 2017
👍3 ❤1

thanks a lot James @wettenhj : the details gives good understanding now, highly appreciate your time and efforts in explaining 👍

p00j4 picture p00j4 on 16 May 2017

With pylint 1.7.1 and python 2.7, using django-jenkins, I'm having the same issue than n8henrie (that was resolved by removing the html option in its pylintrc file). I think its django-jenkins that is using the html option for me. Downgrading to 1.6.5 works. I think a more informative error message for example, 'The html reporter does not exist any longer in pylint 1.7." would still be nice.

Traceback just in case : 

Traceback (most recent call last):
  File "/home/user/workspace/.env/bin/pylint", line 11, in <module>
    sys.exit(run_pylint())
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/lint.py", line 1275, in __init__
    args = linter.load_command_line_configuration(args)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/config.py", line 679, in load_command_line_configuration
    (options, args) = self.cmdline_parser.parse_args(args=args)
  File "/usr/lib/python2.7/optparse.py", line 1400, in parse_args
    stop = self._process_args(largs, rargs, values)
  File "/usr/lib/python2.7/optparse.py", line 1440, in _process_args
    self._process_long_opt(rargs, values)
  File "/usr/lib/python2.7/optparse.py", line 1515, in _process_long_opt
    option.process(opt, value, values, self)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/config.py", line 308, in process
    self.action, self.dest, opt, value, values, parser)
  File "/usr/lib/python2.7/optparse.py", line 809, in take_action
    self.callback(self, opt, value, parser, *args, **kwargs)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/config.py", line 556, in cb_set_provider_option
    self.global_set_option(opt, value)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/config.py", line 560, in global_set_option
    self._all_options[opt].set_option(opt, value)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/lint.py", line 514, in set_option
    self._load_reporter()
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/lint.py", line 478, in _load_reporter
    modutils.get_module_part(qname))
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 437, in get_module_part
    context_file=context_file)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 338, in file_from_modpath
    return file_info_from_modpath(modpath, path, context_file).location
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 383, in file_info_from_modpath
    return _spec_from_modpath(modpath, path, context)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 603, in _spec_from_modpath
    found_spec = spec.find_spec(modpath, path)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/interpreter/_import/spec.py", line 279, in find_spec
    submodule_path or path)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/interpreter/_import/spec.py", line 246, in _find_spec_with_path
    raise ImportError('No module named %s' % '.'.join(module_parts))
ImportError: No module named html
Pierre-Sassoulas picture Pierre-Sassoulas on 23 May 2017

@Pierre-Sassoulas please check your astroid version, it has to do with it.
theses combination works (tried, tested)
1. 

pylint (1.8.0)
astroid (1.5.2)
enum34 (1.1.6)
python 2.7.11
    2. 
pylint 1.6.4, 
astroid 1.4.8
Python 2.7.11
    3. 
pylint 1.7.1, 
astroid 1.4.9
Python 2.7.11

django-jenkins versions would be changing astroid versions indirectly so you must be seeing the differnece

follow step by step if you want to use latest
https://github.com/PyCQA/pylint/issues/1388#issuecomment-301434682

p00j4 picture p00j4 on 23 May 2017

@p00j4 thanks for the quick answer !

I tried :

pip uninstall pylint;  pip uninstall astroid
pip uninstall pylint;  pip uninstall astroid
pip install pylint==1.7.1
pip install astroid==1.4.9

I then got the following traceback during test :

Traceback (most recent call last):
  File "/home/user/workspace/.env/bin/pylint", line 11, in <module>
    sys.exit(run_pylint())
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/lint.py", line 1220, in __init__
    linter.load_default_plugins()
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/lint.py", line 453, in load_default_plugins
    checkers.initialize(self)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/checkers/__init__.py", line 114, in initialize
    register_plugins(linter, __path__[0])
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/utils.py", line 992, in register_plugins
    module = modutils.load_module_from_file(join(directory, filename))
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 268, in load_module_from_file
    return load_module_from_modpath(modpath, path, use_sys)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 229, in load_module_from_modpath
    module = imp.load_module(curname, mp_file, mp_filename, mp_desc)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/checkers/python3.py", line 100, in <module>
    class Python3Checker(checkers.BaseChecker):
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/checkers/python3.py", line 501, in Python3Checker
    'sys.version_info < (3, 0)',
AttributeError: 'module' object has no attribute 'extract_node'

If you can live without the last version until it reach pipy and you have django-djenkins this is working : 

Python 2.7.12
pylint<1.7
django-jenkins==0.110.0

(Astroid is a dependency but if you want to be explicit it's astroid==1.4.9)

Pierre-Sassoulas picture Pierre-Sassoulas on 23 May 2017

Pylint 1.7 needs astroid 1.5+

Dnia 23.05.2017 o godz. 17:04 Pierre Sassoulas notifications@github.com napisał(a):

@p00j4 thanks for the quick answer !

I tried :

pip uninstall pylint; pip uninstall astroid
pip uninstall pylint; pip uninstall astroid
pip install pylint==1.7.1
pip install astroid==1.4.9
I then got the following traceback during test :

Traceback (most recent call last):
File "/home/user/workspace/.env/bin/pylint", line 11, in
sys.exit(run_pylint())
File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/__init__.py", line 13, in run_pylint
Run(sys.argv[1:])
File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/lint.py", line 1220, in __init__
linter.load_default_plugins()
File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/lint.py", line 453, in load_default_plugins
checkers.initialize(self)
File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/checkers/__init__.py", line 114, in initialize
register_plugins(linter, __path__[0])
File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/utils.py", line 992, in register_plugins
module = modutils.load_module_from_file(join(directory, filename))
File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 268, in load_module_from_file
return load_module_from_modpath(modpath, path, use_sys)
File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 229, in load_module_from_modpath
module = imp.load_module(curname, mp_file, mp_filename, mp_desc)
File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/checkers/python3.py", line 100, in
class Python3Checker(checkers.BaseChecker):
File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/checkers/python3.py", line 501, in Python3Checker
'sys.version_info < (3, 0)',
AttributeError: 'module' object has no attribute 'extract_node'
If you can live without the last version until it reach pipy and you have django-djenkins this is working :

Python 2.7.12
pylint<1.7
django-jenkins==0.110.0
(Astroid is a dependency but if you want to be explicit it's astroid==1.4.9)

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You are receiving this because you were mentioned.
Reply to this email directly, view it on GitHub, or mute the thread.

rogalski picture rogalski on 23 May 2017

I received this error with pylint==1.7.1. Downgrading to pylint==1.5.2 fixed the problem.

chrisspen picture chrisspen on 28 May 2017
👍3

Following @rogalski advice I tested with :
pylint 1.7.1,
astroid 1.5.2
Python 2.7.12
django-jenkins 0.110.0

I get the following trace : 

Traceback (most recent call last):
  File "/home/user/workspace/.env/bin/pylint", line 11, in <module>
    sys.exit(run_pylint())
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/__init__.py", line 13, in run_pylint
    Run(sys.argv[1:])
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/lint.py", line 1275, in __init__
    args = linter.load_command_line_configuration(args)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/config.py", line 679, in load_command_line_configuration
    (options, args) = self.cmdline_parser.parse_args(args=args)
  File "/usr/lib/python2.7/optparse.py", line 1400, in parse_args
    stop = self._process_args(largs, rargs, values)
  File "/usr/lib/python2.7/optparse.py", line 1440, in _process_args
    self._process_long_opt(rargs, values)
  File "/usr/lib/python2.7/optparse.py", line 1515, in _process_long_opt
    option.process(opt, value, values, self)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/config.py", line 308, in process
    self.action, self.dest, opt, value, values, parser)
  File "/usr/lib/python2.7/optparse.py", line 809, in take_action
    self.callback(self, opt, value, parser, *args, **kwargs)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/config.py", line 556, in cb_set_provider_option
    self.global_set_option(opt, value)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/config.py", line 560, in global_set_option
    self._all_options[opt].set_option(opt, value)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/lint.py", line 514, in set_option
    self._load_reporter()
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/pylint/lint.py", line 478, in _load_reporter
    modutils.get_module_part(qname))
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 437, in get_module_part
    context_file=context_file)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 338, in file_from_modpath
    return file_info_from_modpath(modpath, path, context_file).location
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 383, in file_info_from_modpath
    return _spec_from_modpath(modpath, path, context)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/modutils.py", line 603, in _spec_from_modpath
    found_spec = spec.find_spec(modpath, path)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/interpreter/_import/spec.py", line 279, in find_spec
    submodule_path or path)
  File "/home/user/workspace/.env/local/lib/python2.7/site-packages/astroid/interpreter/_import/spec.py", line 246, in _find_spec_with_path
    raise ImportError('No module named %s' % '.'.join(module_parts))
ImportError: No module named html
Pierre-Sassoulas picture Pierre-Sassoulas on 29 May 2017

@Pierre-Sassoulas somewhere pylint is invoked with option: output-format=html
@PCManticore I'm not sure what was underlying reason to remove html reporter, but maybe its removal should be reverted?

rogalski picture rogalski on 29 May 2017

I had astroid==1.5.2 and enum34==1.0.4, upgraded to astroid==1.5.3 forced the update to enum34==1.1.6 and now is working

adiroiban picture adiroiban on 6 Jun 2017

For me upgrading enum34 to 1.1.6 fixed the issue

diasjorge picture diasjorge on 8 Jun 2017

Upgrading astroid and enum34 did not fix the problem for me.

chrisspen picture chrisspen on 17 Jun 2017

Can you create minimal complete reproduction where we have this RuntimeError with new version of enum34?

Thanks in advance.

Dnia 17.06.2017 o godz. 05:51 Chris Spencer notifications@github.com napisał(a):

Upgrading astroid and enum34 did not fix the problem for me.

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You are receiving this because you were mentioned.
Reply to this email directly, view it on GitHub, or mute the thread.

rogalski picture rogalski on 17 Jun 2017

I still get this with:
pylint==1.8.1
astroid==1.60
enum34==1.1.6

Steps to reproduce (on Ubuntu 16.04):
conda create -n test python=2.7
source activate test
pip install -U pylint
pylint

Output:

Traceback (most recent call last):
  File "/home/px046/anaconda2/envs/robot/bin/pylint", line 11, in <module>
    sys.exit(run_pylint())
  File "/home/px046/anaconda2/envs/robot/lib/python2.7/site-packages/pylint/__init__.py", line 16, in run_pylint
    Run(sys.argv[1:])
  File "/home/px046/anaconda2/envs/robot/lib/python2.7/site-packages/pylint/lint.py", line 1266, in __init__
    linter.load_default_plugins()
  File "/home/px046/anaconda2/envs/robot/lib/python2.7/site-packages/pylint/lint.py", line 479, in load_default_plugins
    checkers.initialize(self)
  File "/home/px046/anaconda2/envs/robot/lib/python2.7/site-packages/pylint/checkers/__init__.py", line 119, in initialize
    register_plugins(linter, __path__[0])
  File "/home/px046/anaconda2/envs/robot/lib/python2.7/site-packages/pylint/utils.py", line 1033, in register_plugins
    module = modutils.load_module_from_file(join(directory, filename))
  File "/home/px046/anaconda2/lib/python2.7/site-packages/astroid/modutils.py", line 272, in load_module_from_file
    return load_module_from_modpath(modpath, path, use_sys)
  File "/home/px046/anaconda2/lib/python2.7/site-packages/astroid/modutils.py", line 233, in load_module_from_modpath
    module = imp.load_module(curname, mp_file, mp_filename, mp_desc)
  File "/home/px046/anaconda2/envs/robot/lib/python2.7/site-packages/pylint/checkers/python3.py", line 124, in <module>
    class Python3Checker(checkers.BaseChecker):
  File "/home/px046/anaconda2/envs/robot/lib/python2.7/site-packages/pylint/checkers/python3.py", line 566, in Python3Checker
    'sys.version_info < (3, 0)',
  File "/home/px046/anaconda2/lib/python2.7/site-packages/astroid/node_classes.py", line 837, in repr_tree
    _repr_tree(self, result, set())
  File "/home/px046/anaconda2/lib/python2.7/site-packages/singledispatch.py", line 210, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/home/px046/anaconda2/lib/python2.7/site-packages/astroid/node_classes.py", line 826, in _repr_node
    depth)
  File "/home/px046/anaconda2/lib/python2.7/site-packages/singledispatch.py", line 210, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/home/px046/anaconda2/lib/python2.7/site-packages/astroid/node_classes.py", line 826, in _repr_node
    depth)
  File "/home/px046/anaconda2/lib/python2.7/site-packages/singledispatch.py", line 210, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/home/px046/anaconda2/lib/python2.7/site-packages/singledispatch.py", line 191, in dispatch
    impl = _find_impl(cls, registry)
  File "/home/px046/anaconda2/lib/python2.7/site-packages/singledispatch.py", line 142, in _find_impl
    mro = _compose_mro(cls, registry.keys())
  File "/home/px046/anaconda2/lib/python2.7/site-packages/singledispatch.py", line 130, in _compose_mro
    return _c3_mro(cls, abcs=mro)
  File "/home/px046/anaconda2/lib/python2.7/site-packages/singledispatch.py", line 84, in _c3_mro
    other_c3_mros = [_c3_mro(base, abcs=abcs) for base in other_bases]
  File "/home/px046/anaconda2/lib/python2.7/site-packages/singledispatch.py", line 88, in _c3_mro
    [explicit_bases] + [abstract_bases] + [other_bases]
  File "/home/px046/anaconda2/lib/python2.7/site-packages/singledispatch.py", line 39, in _c3_merge
    raise RuntimeError("Inconsistent hierarchy")
RuntimeError: Inconsistent hierarchy
Omegastick picture Omegastick on 18 Dec 2017

I went through this entire thread multiple times and still could not overcome the Inconsistent hierarchy error. I tried every single alternative offered to no avail. I'm posting here only to offer yet another alternative. wettenhj above mentioned that the conditional if not candidate in the file singledispatch.py was evaluating to true when container was not None (there are other false values besides None, of course). Changing the source code to if candidate == None is a more explicit way of testing what the conditional actually cares about. Making this change immediately cleared up the problem for me.

nickrusso42518 picture nickrusso42518 on 2 Jan 2018
👍2

@Omegastick please try with version of astroid as
5.x.x https://github.com/PyCQA/pylint/issues/1388#issuecomment-303365503

p00j4 picture p00j4 on 6 Jan 2018

@p00j4 As far as I can see, the latest release of Astroid is 1.6.0. Is there another repository with major release 5 somewhere that I can't find?

Omegastick picture Omegastick on 15 Jan 2018

This worked on python 3.6+

pylint 1.8.1,
astroid 1.6.0
Python 3.6.3
jsmedmar picture jsmedmar on 22 Jan 2018

@jsmedmar Didnt work for me with your setup :-(

divinedragon picture divinedragon on 26 Feb 2018

EDIT

Installing pylint1.5.2 instead of 1.8.2 fixed the problem for me.

When running pylint -V I get the same 'RuntimeError: Inconsistent hierarchy' error
pip list tells me I am using:

astroid (1.6.1)
enum34 (1.1.6)
pylint (1.8.2)
pip (9.0.1)

I installed pylint using pip install pylint.

I also see that I satisfies all the requirements of pylint:

Requirement already satisfied: singledispatch; python_version < "3.4" in /usr/local/lib/python2.7/dist-packages (from pylint)
Requirement already satisfied: isort>=4.2.5 in /usr/local/lib/python2.7/dist-packages (from pylint)
Requirement already satisfied: configparser; python_version == "2.7" in /usr/local/lib/python2.7/dist-packages (from pylint)
Requirement already satisfied: backports.functools-lru-cache; python_version == "2.7" in /usr/local/lib/python2.7/dist-packages (from pylint)
Requirement already satisfied: mccabe in /usr/local/lib/python2.7/dist-packages (from pylint)
Requirement already satisfied: astroid<2.0,>=1.6 in /usr/local/lib/python2.7/dist-packages (from pylint)
Requirement already satisfied: six in /usr/lib/python2.7/dist-packages (from pylint)
Requirement already satisfied: futures in /usr/lib/python2.7/dist-packages (from isort>=4.2.5->pylint)
Requirement already satisfied: enum34>=1.1.3; python_version < "3.4" in ./.local/lib/python2.7/site-packages (from astroid<2.0,>=1.6->pylint)
Requirement already satisfied: wrapt in /usr/local/lib/python2.7/dist-packages (from astroid<2.0,>=1.6->pylint)
Requirement already satisfied: lazy-object-proxy in /usr/local/lib/python2.7/dist-packages (from astroid<2.0,>=1.6->pylint)
Installing collected packages: pylint
Successfully installed pylint-1.8.2

Tried many install / uninstalls with no luck...
Any help would be appreciated!

Full error stack:

pylint -V
Traceback (most recent call last):
  File "/usr/local/bin/pylint", line 11, in <module>
    sys.exit(run_pylint())
  File "/usr/local/lib/python2.7/dist-packages/pylint/__init__.py", line 16, in run_pylint
    Run(sys.argv[1:])
  File "/usr/local/lib/python2.7/dist-packages/pylint/lint.py", line 1266, in __init__
    linter.load_default_plugins()
  File "/usr/local/lib/python2.7/dist-packages/pylint/lint.py", line 479, in load_default_plugins
    checkers.initialize(self)
  File "/usr/local/lib/python2.7/dist-packages/pylint/checkers/__init__.py", line 119, in initialize
    register_plugins(linter, __path__[0])
  File "/usr/local/lib/python2.7/dist-packages/pylint/utils.py", line 1033, in register_plugins
    module = modutils.load_module_from_file(join(directory, filename))
  File "/usr/local/lib/python2.7/dist-packages/astroid/modutils.py", line 272, in load_module_from_file
    return load_module_from_modpath(modpath, path, use_sys)
  File "/usr/local/lib/python2.7/dist-packages/astroid/modutils.py", line 233, in load_module_from_modpath
    module = imp.load_module(curname, mp_file, mp_filename, mp_desc)
  File "/usr/local/lib/python2.7/dist-packages/pylint/checkers/python3.py", line 124, in <module>
    class Python3Checker(checkers.BaseChecker):
  File "/usr/local/lib/python2.7/dist-packages/pylint/checkers/python3.py", line 566, in Python3Checker
    'sys.version_info < (3, 0)',
  File "/usr/local/lib/python2.7/dist-packages/astroid/node_classes.py", line 837, in repr_tree
    _repr_tree(self, result, set())
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 210, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/usr/local/lib/python2.7/dist-packages/astroid/node_classes.py", line 826, in _repr_node
    depth)
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 210, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/usr/local/lib/python2.7/dist-packages/astroid/node_classes.py", line 826, in _repr_node
    depth)
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 210, in wrapper
    return dispatch(args[0].__class__)(*args, **kw)
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 191, in dispatch
    impl = _find_impl(cls, registry)
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 142, in _find_impl
    mro = _compose_mro(cls, registry.keys())
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 130, in _compose_mro
    return _c3_mro(cls, abcs=mro)
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 84, in _c3_mro
    other_c3_mros = [_c3_mro(base, abcs=abcs) for base in other_bases]
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 88, in _c3_mro
    [explicit_bases] + [abstract_bases] + [other_bases]
  File "/usr/local/lib/python2.7/dist-packages/singledispatch.py", line 39, in _c3_merge
    raise RuntimeError("Inconsistent hierarchy")
jcBeaupre picture jcBeaupre on 12 Mar 2018

This problem seems to be more related to singledispatch rather than enum as we assumed with our earlier fix.
Even with this, we definitely need some way to reproduce this bug, a Docker container where this problem occurs will be ideal, as I can't reproduce this bug on my machine with the given requirements.

PCManticore picture PCManticore on 12 Mar 2018

Solved this issue i just use python 2.7 and worked for me earlier i was working on 3.5

ajay5121992 picture ajay5121992 on 21 Mar 2018

Installing an older version of pylint removed the Inconsistent hierarchy error. I believe 1.9.2 was what I had installed before going to 1.7.1. I picked 1.7.1 just because we have a similar machine with that version that did not have this issue.

$ pylint --version
No config file found, using default configuration
pylint 1.7.1,
astroid 1.6.5
Python 2.7.5 (default, Aug  4 2017, 00:39:18)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)]
frayedknot picture frayedknot on 14 Jun 2018

My python path was picking up an old version of enum. Fixing that fixed this issue for me.

jeffgabhart picture jeffgabhart on 16 Jul 2018
👍1

@jeffgabhart Thanks for confirming that this is an enum bug.

PCManticore picture PCManticore on 17 Jul 2018

I have the same issue with Python 3.7.4, astroid 2.3.3 and pylint 2.4.4.

  • python --version
Python 3.7.4
  • python -m venv .venv-test
  • source .venv-test/bin/activate
  • pip install pylint
[...]
  • pip freeze
astroid==2.3.3
isort==4.3.21
lazy-object-proxy==1.4.3
mccabe==0.6.1
pylint==2.4.4
six==1.13.0
typed-ast==1.4.0
wrapt==1.11.2
  • pylint --output-format=html src/main.py
Traceback (most recent call last):
  File "/usr/lib/python3.7/site-packages/pylint/lint.py", line 657, in _load_reporter
    reporter_class = self._load_reporter_class()
  File "/usr/lib/python3.7/site-packages/pylint/lint.py", line 667, in _load_reporter_class
    reporter_class = getattr(module, class_name)
AttributeError: module 'html' has no attribute 'html'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/pylint", line 10, in <module>
    sys.exit(run_pylint())
  File "/usr/lib/python3.7/site-packages/pylint/__init__.py", line 20, in run_pylint
    Run(sys.argv[1:])
  File "/usr/lib/python3.7/site-packages/pylint/lint.py", line 1594, in __init__
    args = linter.load_command_line_configuration(args)
  File "/usr/lib/python3.7/site-packages/pylint/config.py", line 778, in load_command_line_configuration
    (options, args) = self.cmdline_parser.parse_args(args=args)
  File "/usr/lib/python3.7/optparse.py", line 1387, in parse_args
    stop = self._process_args(largs, rargs, values)
  File "/usr/lib/python3.7/optparse.py", line 1427, in _process_args
    self._process_long_opt(rargs, values)
  File "/usr/lib/python3.7/optparse.py", line 1501, in _process_long_opt
    option.process(opt, value, values, self)
  File "/usr/lib/python3.7/site-packages/pylint/config.py", line 356, in process
    return self.take_action(self.action, self.dest, opt, value, values, parser)
  File "/usr/lib/python3.7/optparse.py", line 805, in take_action
    self.callback(self, opt, value, parser, *args, **kwargs)
  File "/usr/lib/python3.7/site-packages/pylint/config.py", line 642, in cb_set_provider_option
    self.global_set_option(opt, value)
  File "/usr/lib/python3.7/site-packages/pylint/config.py", line 646, in global_set_option
    self._all_options[opt].set_option(opt, value)
  File "/usr/lib/python3.7/site-packages/pylint/lint.py", line 702, in set_option
    self._load_reporter()
  File "/usr/lib/python3.7/site-packages/pylint/lint.py", line 659, in _load_reporter
    raise exceptions.InvalidReporterError(name)
pylint.exceptions.InvalidReporterError: html

By the way, what the point with enum34? This module is not installed as a pylint dependency (but even if I install it manually, this doesn't fix the problem).

roipoussiere picture roipoussiere on 12 Dec 2019
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