Crash (possibly caused by `win32more`) `Building error when trying to create ast representation of module 'src.ui.mainwindow'`

[youzi-3222]

Bug description

When parsing the following a.py:

"""
程序主窗口。
"""

from win32more.Microsoft.UI.Xaml import LaunchActivatedEventArgs, Window
from win32more.Microsoft.UI.Xaml.Markup import XamlReader
from win32more.Microsoft.UI.Xaml.Media import MicaBackdrop
from win32more.xaml import XamlApplication


class MainWindow(XamlApplication):
    """
    程序主窗口。
    """

    win: Window
    args: LaunchActivatedEventArgs

    def OnLaunched(self, args):
        self.win = Window()
        self.win.SystemBackdrop = MicaBackdrop()
        with open("page.xaml", "r", encoding="utf-8") as file:
            self.win.Content = XamlReader.Load(file.read())
        self.win.Activate()


XamlApplication.Start(MainWindow)

Command used

pylint a.py

Pylint output

pylint crashed with a `AstroidBuildingError` and with the following stacktrace:

Traceback (most recent call last):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\pylint\lint\pylinter.py", line 980, in get_ast
    return astroid.builder.AstroidBuilder(MANAGER).string_build(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\builder.py", line 153, in string_build
    return self._post_build(module, builder, "utf-8")
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\builder.py", line 169, in _post_build
    self.delayed_assattr(delayed)
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\builder.py", line 243, in delayed_assattr
    for inferred in node.expr.infer():
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_ng.py", line 168, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 86, in inner
    yield next(generator)
          ^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 49, in wrapped
    for res in _func(node, context, **kwargs):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\bases.py", line 177, in _infer_stmts
    for inf in stmt.infer(context=context):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_ng.py", line 168, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 86, in inner
    yield next(generator)
          ^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 49, in wrapped
    for res in _func(node, context, **kwargs):
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_classes.py", line 456, in _infer
    stmts = list(self.assigned_stmts(context=context))
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\protocols.py", line 368, in _arguments_infer_argname
    is_metaclass = isinstance(cls, nodes.ClassDef) and cls.type == "metaclass"
                                                       ^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\scoped_nodes\scoped_nodes.py", line 1785, in _class_type
    if _is_metaclass(klass, context=context):
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\scoped_nodes\scoped_nodes.py", line 1752, in _is_metaclass
    for baseobj in base.infer(context=context):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_ng.py", line 168, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 86, in inner
    yield next(generator)
          ^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 49, in wrapped
    for res in _func(node, context, **kwargs):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\bases.py", line 177, in _infer_stmts
    for inf in stmt.infer(context=context):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_ng.py", line 168, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 86, in inner
    yield next(generator)
          ^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 49, in wrapped
    for res in _func(node, context, **kwargs):
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_classes.py", line 2867, in _infer
    module = self.do_import_module()
             ^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\_base_nodes.py", line 168, in do_import_module
    return mymodule.import_module(
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\scoped_nodes\scoped_nodes.py", line 462, in import_module
    return AstroidManager().ast_from_module_name(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\manager.py", line 276, in ast_from_module_name
    return self.ast_from_file(found_spec.location, modname, fallback=False)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\manager.py", line 166, in ast_from_file
    return AstroidBuilder(self).file_build(filepath, modname)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\builder.py", line 145, in file_build
    return self._post_build(module, builder, encoding)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\builder.py", line 169, in _post_build
    self.delayed_assattr(delayed)
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\builder.py", line 243, in delayed_assattr
    for inferred in node.expr.infer():
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_ng.py", line 168, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 86, in inner
    yield next(generator)
          ^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 49, in wrapped
    for res in _func(node, context, **kwargs):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\bases.py", line 177, in _infer_stmts
    for inf in stmt.infer(context=context):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_ng.py", line 168, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 86, in inner
    yield next(generator)
          ^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 49, in wrapped
    for res in _func(node, context, **kwargs):
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_classes.py", line 456, in _infer
    stmts = list(self.assigned_stmts(context=context))
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\protocols.py", line 368, in _arguments_infer_argname
    is_metaclass = isinstance(cls, nodes.ClassDef) and cls.type == "metaclass"
                                                       ^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\scoped_nodes\scoped_nodes.py", line 1785, in _class_type
    if _is_metaclass(klass, context=context):
       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\scoped_nodes\scoped_nodes.py", line 1752, in _is_metaclass
    for baseobj in base.infer(context=context):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_ng.py", line 168, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 86, in inner
    yield next(generator)
          ^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 49, in wrapped
    for res in _func(node, context, **kwargs):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\bases.py", line 177, in _infer_stmts
    for inf in stmt.infer(context=context):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_ng.py", line 168, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 86, in inner
    yield next(generator)
          ^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 49, in wrapped
    for res in _func(node, context, **kwargs):
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_classes.py", line 2867, in _infer
    module = self.do_import_module()
             ^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\_base_nodes.py", line 168, in do_import_module
    return mymodule.import_module(
           ^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\scoped_nodes\scoped_nodes.py", line 462, in import_module
    return AstroidManager().ast_from_module_name(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\manager.py", line 276, in ast_from_module_name
    return self.ast_from_file(found_spec.location, modname, fallback=False)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\manager.py", line 166, in ast_from_file
    return AstroidBuilder(self).file_build(filepath, modname)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\builder.py", line 145, in file_build
    return self._post_build(module, builder, encoding)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\builder.py", line 173, in _post_build
    module = self._manager.visit_transforms(module)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\manager.py", line 127, in visit_transforms
    return self._transform.visit(node)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\transforms.py", line 158, in visit
    return self._visit(node)
           ^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\transforms.py", line 82, in _visit
    visited = self._visit_generic(value)
              ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\transforms.py", line 108, in _visit_generic
    return [self._visit_generic(child) for child in node]
            ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\transforms.py", line 115, in _visit_generic
    return self._visit(node)
           ^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\transforms.py", line 85, in _visit
    return self._transform(node)
           ^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\transforms.py", line 66, in _transform
    if predicate is None or predicate(node):
                            ^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\brain\brain_namedtuple_enum.py", line 647, in _is_enum_subclass
    return cls.is_subtype_of("enum.Enum")
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\scoped_nodes\scoped_nodes.py", line 2070, in is_subtype_of
    return any(anc.qname() == type_name for anc in self.ancestors(context=context))
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\scoped_nodes\scoped_nodes.py", line 2070, in <genexpr>
    return any(anc.qname() == type_name for anc in self.ancestors(context=context))
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\scoped_nodes\scoped_nodes.py", line 2245, in ancestors
    for baseobj in stmt.infer(context):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_ng.py", line 168, in infer
    for i, result in enumerate(self._infer(context=context, **kwargs)):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 86, in inner
    yield next(generator)
          ^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\decorators.py", line 49, in wrapped
    for res in _func(node, context, **kwargs):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_classes.py", line 1108, in _infer_attribute
    yield from owner.igetattr(node.attrname, context)
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\scoped_nodes\scoped_nodes.py", line 2502, in igetattr
    first_scope = first_attr.parent.scope()
                  ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\astroid\nodes\node_ng.py", line 326, in scope
    raise ParentMissingError(target=self)
astroid.exceptions.ParentMissingError: Parent not found on <Unknown.Unknown l.0 at 0x1a6cd355df0>.

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

Traceback (most recent call last):
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\pylint\lint\pylinter.py", line 716, in _get_asts
    ast_per_fileitem[fileitem] = self.get_ast(
                                 ^^^^^^^^^^^^^
  File "c:\Users\Administrator\.vscode\extensions\ms-python.pylint-2025.3.11821009\bundled\libs\pylint\lint\pylinter.py", line 1001, in get_ast
    raise astroid.AstroidBuildingError(
astroid.exceptions.AstroidBuildingError: Building error when trying to create ast representation of module 'src.ui.mainwindow'

Expected behavior

No crash.

Pylint version

pylint 3.3.4
astroid 3.3.8
Python 3.12.1 (tags/v3.12.1:2305ca5, Dec  7 2023, 22:03:25) [MSC v.1937 64 bit (AMD64)]

OS / Environment

win32 (Windows)

Additional dependencies

Python library win32more (ynkdir/py-win32more)

Additional information

Additionally, when I removed the imports of win32more from the code, pylint doesn't occur the F0002, as the pictures shows.

Pictures

I've searched for similar issues by the search pattern of win32more.

Thanks a lot for your effort!

[Pierre-Sassoulas]

Thank you for opening this issue. Look similar to #7680 and #9479