TypeError: 'Uninferable' object is not iterable

[ultmaster]

Bug description

When parsing the following file:

# Copyright (c) Microsoft Corporation.
# Licensed under the MIT license.

try:
    from .version import __version__  # pylint: disable=import-error
except ModuleNotFoundError:
    __version__ = '999.dev0'

from .runtime.log import _init_logger
_init_logger()

from .common.framework import *
from .common.serializer import trace, dump, load
from .experiment import Experiment
from .runtime.env_vars import dispatcher_env_vars
from .runtime.log import enable_global_logging, silence_stdout
from .utils import ClassArgsValidator

if dispatcher_env_vars.SDK_PROCESS != 'dispatcher':
    from .trial import *
    from .smartparam import *
    from .common.nas_utils import training_update

class NoMoreTrialError(Exception):
    def __init__(self, ErrorInfo='Search space fully explored'):
        super().__init__(self)
        self.errorinfo = ErrorInfo

    def __str__(self):
        return self.errorinfo

pylint crashed with a AstroidError and with the following stacktrace:

Traceback (most recent call last):
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/inference_tip.py", line 38, in _inference_tip_cached
    result = _cache[func, node]
KeyError: (<function infer_named_tuple at 0x7f3f50baa1f0>, <Call l.31 at 0x7f3f32dfc1f0>)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/brain/brain_namedtuple_enum.py", line 88, in infer_func_form
    attributes: list[str] = names.value.replace(",", " ").split()
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/bases.py", line 134, in __getattr__
    return getattr(self._proxied, name)
AttributeError: 'ClassDef' object has no attribute 'value'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/vsts/.local/lib/python3.9/site-packages/pylint/lint/pylinter.py", line 769, in _lint_file
    check_astroid_module(module)
  File "/home/vsts/.local/lib/python3.9/site-packages/pylint/lint/pylinter.py", line 1029, in check_astroid_module
    retval = self._check_astroid_module(
  File "/home/vsts/.local/lib/python3.9/site-packages/pylint/lint/pylinter.py", line 1079, in _check_astroid_module
    walker.walk(node)
  File "/home/vsts/.local/lib/python3.9/site-packages/pylint/utils/ast_walker.py", line 93, in walk
    self.walk(child)
  File "/home/vsts/.local/lib/python3.9/site-packages/pylint/utils/ast_walker.py", line 90, in walk
    callback(astroid)
  File "/home/vsts/.local/lib/python3.9/site-packages/pylint/checkers/variables.py", line 1727, in visit_importfrom
    self._check_module_attrs(node, module, name.split("."))
  File "/home/vsts/.local/lib/python3.9/site-packages/pylint/checkers/variables.py", line 2652, in _check_module_attrs
    module = next(module.getattr(name)[0].infer())
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/nodes/node_ng.py", line 169, in infer
    yield from self._infer(context=context, **kwargs)
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/decorators.py", line 139, in raise_if_nothing_inferred
    yield next(generator)
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/decorators.py", line 108, in wrapped
    for res in _func(node, context, **kwargs):
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/bases.py", line 165, in _infer_stmts
    for inf in stmt.infer(context=context):  # type: ignore[union-attr]
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/nodes/node_ng.py", line 182, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/decorators.py", line 139, in raise_if_nothing_inferred
    yield next(generator)
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/decorators.py", line 108, in wrapped
    for res in _func(node, context, **kwargs):
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/inference.py", line 264, in infer_call
    yield from callee.infer_call_result(caller=self, context=callcontext)
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/nodes/scoped_nodes/scoped_nodes.py", line 1748, in infer_call_result
    yield from returnnode.value.infer(context)
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/nodes/node_ng.py", line 182, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/decorators.py", line 139, in raise_if_nothing_inferred
    yield next(generator)
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/decorators.py", line 108, in wrapped
    for res in _func(node, context, **kwargs):
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/inference.py", line 255, in infer_call
    for callee in self.func.infer(context):
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/nodes/node_ng.py", line 159, in infer
    results = list(self._explicit_inference(self, context, **kwargs))
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/inference_tip.py", line 45, in _inference_tip_cached
    result = _cache[func, node] = list(func(*args, **kwargs))
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/brain/brain_namedtuple_enum.py", line 190, in infer_named_tuple
    class_node, name, attributes = infer_func_form(
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/brain/brain_namedtuple_enum.py", line 93, in infer_func_form
    fields = _get_namedtuple_fields(node)
  File "/home/vsts/.local/lib/python3.9/site-packages/astroid/brain/brain_namedtuple_enum.py", line 541, in _get_namedtuple_fields
    for elt in next(node.args[1].infer()).elts:
TypeError: 'Uninferable' object is not iterable

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/home/vsts/.local/lib/python3.9/site-packages/pylint/lint/pylinter.py", line 734, in _lint_files
    self._lint_file(fileitem, module, check_astroid_module)
  File "/home/vsts/.local/lib/python3.9/site-packages/pylint/lint/pylinter.py", line 771, in _lint_file
    raise astroid.AstroidError from e
astroid.exceptions.AstroidError

Configuration

# Usage:
#       python3 -m pylint --rcfile=PATH_TO_THIS_FILE PACKAGE_NAME
# or
#       python3 -m pylint --rcfile=PATH_TO_THIS_FILE SOURCE_FILE.py

[SETTINGS]

max-line-length=140

max-args=8
max-locals=15
max-statements=50
max-attributes=15

const-naming-style=any

# based on pylint 2.1.1
disable=W,C,R,I,no-member

# will be enforced on CI Pipeline
enable= unused-wildcard-import,
        bad-whitespace,
        unused-import,
        bad-continuation,
        wrong-import-order,
        trailing-whitespace,
        logging-not-lazy,
        line-too-long,
        unused-variable,
        wildcard-import,
#        useless-super-delegation,
        len-as-condition,
        logging-format-interpolation,
        redefined-builtin,
        deprecated-method 

# will change to `enable` one day
# disable= missing-docstring

# will not be enforced on CI but highly recommend contributor fixing it
# enable=no-member,
#        too-many-branches,
#        protected-access 

ignore-patterns=test*

# List of members which are set dynamically and missed by pylint inference
generated-members=numpy.*,torch.*,tensorflow.*,pycuda.*,tensorrt.*

ignored-modules=tensorflow,_winapi,msvcrt,tensorrt,pycuda,nni_node

Command used

python -m pylint --rcfile pylintrc nni

Pylint output

************* Module nni
nni/__init__.py:1:0: F0002: nni/__init__.py: Fatal error while checking 'nni/__init__.py'. Please open an issue in our bug tracker so we address this. There is a pre-filled template that you can use in '/home/vsts/.cache/pylint/pylint-crash-2022-08-29-07-03-02.txt'. (astroid-error)

Expected behavior

Success.

It used to work with pylint 2.14.5.

Pylint version

pylint 2.15.0
astroid 2.12.4
python 3.9.13

OS / Environment

Ubuntu 20.04

Additional dependencies

https://msrasrg.visualstudio.com/NNIOpenSource/_build/results?buildId=39425&view=logs&j=96944790-a21b-53d9-449f-42de1f10c3f2&t=882d9a50-fcc7-55b5-da21-227b11b9a8bf

[jacobtylerwalls]

Hi @guilhermearaujo, your issue looks different -- it's coming out of pylint-django, which may or may not be fully tested against pylint 2.15. I'd also give it a retest against astroid 2.12.5, which just went out. I know that's a lot of dependencies to track, but we'd greatly appreciate knowing if astroid 2.12.5 resolves your issue.

[guilhermearaujo]

@jacobtylerwalls I just tested with astroid 2.12.5, it still fails the same way

[jacobtylerwalls]

Thanks, then it's probably the same issue as pylint-dev/pylint-django#370.