refactor: Better handling of import errors and system exits while ins…

…pecting modules

src/griffe/loader.py

@@ -117,15 +117,18 @@ def _visit_module(self, code: str, module_name: str, module_path: Path, parent:
  )
 
  def _inspect_module(self, module_name: str, filepath: Path | None = None, parent: Module | None = None) -> Module:
- return inspect(
- module_name,
- filepath=filepath,
- extensions=self.extensions,
- parent=parent,
- docstring_parser=self.docstring_parser,
- docstring_options=self.docstring_options,
- lines_collection=self.lines_collection,
- )
+ try:
+ return inspect(
+ module_name,
+ filepath=filepath,
+ extensions=self.extensions,
+ parent=parent,
+ docstring_parser=self.docstring_parser,
+ docstring_options=self.docstring_options,
+ lines_collection=self.lines_collection,
+ )
+ except SystemExit as error:
+ raise ImportError(f"Importing '{module_name}' raised a system exit") from error
 
  def _member_parent(self, module: Module, subparts: NamePartsType, subpath: Path) -> Module:
  parent_parts = subparts[:-1]
@@ -289,6 +292,8 @@ def _load_submodule(self, module: Module, subparts: NamePartsType, subpath: Path
  except SyntaxError:
  message = traceback.format_exc(limit=0).replace("SyntaxError: invalid syntax", "").strip()
  logger.error(f"Syntax error: {message}")
+ except ImportError as error: # noqa: WPS440
+ logger.error(f"Import error: {error}")
 
 
 class AsyncGriffeLoader(_BaseGriffeLoader):
@@ -422,11 +427,17 @@ async def _load_submodule(self, module: Module, subparts: NamePartsType, subpath
  try:
  member_parent = self._member_parent(module, subparts, subpath)
  except UnimportableModuleError as error:
- logger.debug(str(error))
- else:
+ logger.warning(f"{error}. Missing __init__ module?")
+ return
+ try:
  member_parent[subparts[-1]] = await self._load_module_path(
  subparts[-1], subpath, submodules=False, parent=member_parent
  )
+ except SyntaxError:
+ message = traceback.format_exc(limit=0).replace("SyntaxError: invalid syntax", "").strip()
+ logger.error(f"Syntax error: {message}")
+ except ImportError as error: # noqa: WPS440
+ logger.error(f"Import error: {error}")
 
 
 def _top_name_and_path(