Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

astroid/rebuilder.py: KeyError: <class '_ast.Is'> running pylint #3558

Closed
ray-grointel opened this issue May 1, 2020 · 6 comments
Closed

astroid/rebuilder.py: KeyError: <class '_ast.Is'> running pylint #3558

ray-grointel opened this issue May 1, 2020 · 6 comments
Assignees
@Pierre-Sassoulas
Labels
Duplicate 🐫 Duplicate of an already existing issue

Comments

@ray-grointel
Copy link

Downgrading astroid from 2.4.0 to 2.3.2 fixes the issue.

Steps to reproduce

  1. Update pylint
  2. Run pylint

Current behavior

Traceback (most recent call last):
  File "/venvs/venv3/bin/pylint", line 8, in <module>
    sys.exit(run_pylint())
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/__init__.py", line 22, in run_pylint
    PylintRun(sys.argv[1:])
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/lint/run.py", line 338, in __init__
    linter.check(args)
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 871, in check
    self.get_ast, self._iterate_file_descrs(files_or_modules)
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 904, in _check_files
    self._check_file(get_ast, check_astroid_module, name, filepath, modname)
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 930, in _check_file
    check_astroid_module(ast_node)
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 1063, in check_astroid_module
    ast_node, walker, rawcheckers, tokencheckers
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/lint/pylinter.py", line 1107, in _check_astroid_module
    walker.walk(ast_node)
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 75, in walk
    self.walk(child)
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 75, in walk
    self.walk(child)
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 75, in walk
    self.walk(child)
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/utils/ast_walker.py", line 72, in walk
    callback(astroid)
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/checkers/typecheck.py", line 1218, in visit_call
    called = safe_infer(node.func)
  File "/venvs/venv3/lib/python3.6/site-packages/pylint/checkers/utils.py", line 1119, in safe_infer
    value = next(infer_gen)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 319, in infer_attribute
    yield from owner.igetattr(self.attrname, context)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 93, in wrapped
    generator = _func(node, context, **kwargs)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 273, in infer_import_from    module = self.do_import_module()
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/mixins.py", line 100, in do_import_module
    modname, level=level, relative_only=level and level >= 1
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/scoped_nodes.py", line 642, in import_module
    return MANAGER.ast_from_module_name(absmodname)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/manager.py", line 189, in ast_from_module_name
    return self.ast_from_file(found_spec.location, modname, fallback=False)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/manager.py", line 98, in ast_from_file
    return AstroidBuilder(self).file_build(filepath, modname)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 138, in file_build
    return self._post_build(module, encoding)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 158, in _post_build
    self.delayed_assattr(delayed)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 225, in delayed_assattr
    for inferred in node.expr.infer():
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 227, in infer_call
    for callee in self.func.infer(context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 319, in infer_attribute
    yield from owner.igetattr(self.attrname, context)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 93, in wrapped
    generator = _func(node, context, **kwargs)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 273, in infer_import_from
    module = self.do_import_module()
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/mixins.py", line 100, in do_import_module
    modname, level=level, relative_only=level and level >= 1
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/scoped_nodes.py", line 642, in import_module
    return MANAGER.ast_from_module_name(absmodname)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/manager.py", line 189, in ast_from_module_name
    return self.ast_from_file(found_spec.location, modname, fallback=False)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/manager.py", line 98, in ast_from_file
    return AstroidBuilder(self).file_build(filepath, modname)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 138, in file_build
    return self._post_build(module, encoding)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 158, in _post_build
    self.delayed_assattr(delayed)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 225, in delayed_assattr
    for inferred in node.expr.infer():
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 227, in infer_call
    for callee in self.func.infer(context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 293, in infer_attribute
    for owner in self.expr.infer(context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 93, in wrapped
    generator = _func(node, context, **kwargs)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 850, in infer_assign
    stmts = list(self.assigned_stmts(context=context))
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/protocols.py", line 391, in assign_assigned_stmts
    self.value.infer(context), assign_path, context
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/protocols.py", line 414, in _resolve_assignment_parts
    for part in parts:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 293, in infer_attribute
    for owner in self.expr.infer(context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 293, in infer_attribute
    for owner in self.expr.infer(context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 227, in infer_call
    for callee in self.func.infer(context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 293, in infer_attribute
    for owner in self.expr.infer(context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 93, in wrapped
    generator = _func(node, context, **kwargs)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 850, in infer_assign
    stmts = list(self.assigned_stmts(context=context))
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/protocols.py", line 331, in _arguments_infer_argname
    is_metaclass = isinstance(cls, nodes.ClassDef) and cls.type == "metaclass"
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/scoped_nodes.py", line 1830, in _class_type
    if _is_metaclass(klass):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/scoped_nodes.py", line 1799, in _is_metaclass
    for baseobj in base.infer():
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 93, in wrapped
    generator = _func(node, context, **kwargs)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 273, in infer_import_from
    module = self.do_import_module()
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/mixins.py", line 100, in do_import_module
    modname, level=level, relative_only=level and level >= 1
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/scoped_nodes.py", line 642, in import_module
    return MANAGER.ast_from_module_name(absmodname)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/manager.py", line 189, in ast_from_module_name
    return self.ast_from_file(found_spec.location, modname, fallback=False)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/manager.py", line 98, in ast_from_file
    return AstroidBuilder(self).file_build(filepath, modname)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 138, in file_build
    return self._post_build(module, encoding)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 158, in _post_build
    self.delayed_assattr(delayed)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 225, in delayed_assattr
    for inferred in node.expr.infer():
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 93, in wrapped
    generator = _func(node, context, **kwargs)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 850, in infer_assign
    stmts = list(self.assigned_stmts(context=context))
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/protocols.py", line 331, in _arguments_infer_argname
    is_metaclass = isinstance(cls, nodes.ClassDef) and cls.type == "metaclass"
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/scoped_nodes.py", line 1830, in _class_type
    if _is_metaclass(klass):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/scoped_nodes.py", line 1799, in _is_metaclass
    for baseobj in base.infer():
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 96, in wrapped
    res = next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/bases.py", line 136, in _infer_stmts
    for inferred in stmt.infer(context=context):
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/util.py", line 160, in limit_inference
    yield from islice(iterator, size)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/context.py", line 113, in cache_generator
    for result in generator:
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 132, in raise_if_nothing_inferred
    yield next(generator)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/decorators.py", line 93, in wrapped
    generator = _func(node, context, **kwargs)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/inference.py", line 273, in infer_import_from
    module = self.do_import_module()
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/mixins.py", line 100, in do_import_module
    modname, level=level, relative_only=level and level >= 1
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/scoped_nodes.py", line 642, in import_module
    return MANAGER.ast_from_module_name(absmodname)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/manager.py", line 189, in ast_from_module_name
    return self.ast_from_file(found_spec.location, modname, fallback=False)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/manager.py", line 98, in ast_from_file
    return AstroidBuilder(self).file_build(filepath, modname)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 137, in file_build
    module = self._data_build(data, modname, path)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/builder.py", line 190, in _data_build
    module = builder.visit_module(node, modname, node_file, package)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 165, in visit_module
    newnode.postinit([self.visit(child, newnode) for child in node.body])
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 165, in <listcomp>
    newnode.postinit([self.visit(child, newnode) for child in node.body])
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 177, in visit
    return visit_method(node, parent)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 455, in visit_classdef
    [self.visit(child, newnode) for child in node.body],
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 455, in <listcomp>
    [self.visit(child, newnode) for child in node.body],
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 177, in visit
    return visit_method(node, parent)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 676, in visit_functiondef
    return self._visit_functiondef(nodes.FunctionDef, node, parent)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 666, in _visit_functiondef
    body=[self.visit(child, newnode) for child in node.body],
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 666, in <listcomp>
    body=[self.visit(child, newnode) for child in node.body],
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 177, in visit
    return visit_method(node, parent)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 721, in visit_if
    self.visit(node.test, newnode),
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 177, in visit
    return visit_method(node, parent)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 489, in visit_compare
    for (op, expr) in zip(node.ops, node.comparators)
  File "/venvs/venv3/lib/python3.6/site-packages/astroid/rebuilder.py", line 489, in <listcomp>
    for (op, expr) in zip(node.ops, node.comparators)
KeyError: <class '_ast.Is'>

Expected behavior

------------------------------------
Your code has been rated at 10.00/10

pylint --version output

pylint 2.5.0
astroid 2.4.0
Python 3.6.9 (default, Apr 18 2020, 01:56:04) 
[GCC 8.4.0]
@ray-grointel
Copy link
Author

Maybe related to #3540?

@Pierre-Sassoulas
Copy link
Member

Yes look like a duplicate, could you try with Astroid 2.4.1 ?

@ray-grointel
Copy link
Author

not on pypi yet https://pypi.org/project/astroid/#history

@ray-grointel
Copy link
Author

will test against astroid master

@ray-grointel
Copy link
Author

Ok - it works with pylint 2.5.0 the latest astroid master @ e40ac59 pip install 'git+git://github.com/PyCQA/astroid@e40ac59'

@Pierre-Sassoulas Pierre-Sassoulas added the Duplicate 🐫 Duplicate of an already existing issue label May 1, 2020
@Pierre-Sassoulas Pierre-Sassoulas self-assigned this May 1, 2020
@Pierre-Sassoulas
Copy link
Member

Thank you for the report and for the time you took to test it again :) !

@ray-grointel ray-grointel mentioned this issue May 1, 2020
Closed
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees

@Pierre-Sassoulas Pierre-Sassoulas

Labels
Duplicate 🐫 Duplicate of an already existing issue
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
2 participants
@Pierre-Sassoulas @ray-grointel