Silence a noisy warning when building docs (#169)

autosummary fails to import class attributes exposed by sip,
which results in thousands of warnings dumped during the doc
build.

Hack around this, so that we only get valid warnings when
building docs

autoautosummary.py

@@ -10,7 +10,7 @@
 from docutils import nodes
 from docutils.parsers.rst import directives
 from sphinx.ext import autosummary
-from sphinx.ext.autosummary import Autosummary, get_documenter
+from sphinx.ext.autosummary import Autosummary, ImportExceptionGroup, get_documenter
 from sphinx.locale import __
 from sphinx.util import logging
 from sphinx.util.inspect import isstaticmethod, safe_getattr
@@ -140,6 +140,28 @@ def get_members(
             print(str(e))
             raise e
 
+    def import_by_name(
+        self,
+        name: str,
+        prefixes: list[str | None],
+    ) -> tuple[str, Any, Any, str]:
+        """
+        We have to wrap the original import_by_name, which raises noisy
+        exceptions when trying to handle class attributes exposed by SIP.
+        """
+        try:
+            res = super().import_by_name(name, prefixes)
+        except ImportExceptionGroup:
+            # class attribute import failed, just handle this by faking
+            # the results. The resultant documentation still correctly
+            # contains the attribute docstrings...
+            name_parts = name.split(".")
+            parent_name = ".".join(name_parts[:-1])
+            parent_res = super().import_by_name(parent_name, prefixes)
+            res = (name, None, parent_res[2], parent_res[3])
+
+        return res
+
     def run(self):
         clazz = self.arguments[0]
         rubric_title = None