[compat] Fix compat.WINDOWS_VT_MODE

yt_dlp/compat/compat_utils.py

@@ -31,7 +31,7 @@ def _is_package(module):
     return True
 
 
-def passthrough_module(parent, child, *, callback=lambda _: None):
+def passthrough_module(parent, child, allowed_attributes=None, *, callback=lambda _: None):
     parent_module = importlib.import_module(parent)
     child_module = None  # Import child module only as needed
 
@@ -41,22 +41,30 @@ def passthrough_module(parent, child, *, callback=lambda _: None):
                 with contextlib.suppress(ImportError):
                     return importlib.import_module(f'.{attr}', parent)
 
+            ret = self.__from_child(attr)
+            if ret is _NO_ATTRIBUTE:
+                raise AttributeError(f'module {parent} has no attribute {attr}')
+            callback(attr)
+            return ret
+
+        def __from_child(self, attr):
+            if allowed_attributes is None:
+                if attr.startswith('__') and attr.endswith('__'):
+                    return _NO_ATTRIBUTE
+            elif attr not in allowed_attributes:
+                return _NO_ATTRIBUTE
+
             nonlocal child_module
             child_module = child_module or importlib.import_module(child, parent)
 
-            ret = _NO_ATTRIBUTE
             with contextlib.suppress(AttributeError):
-                ret = getattr(child_module, attr)
+                return getattr(child_module, attr)
 
             if _is_package(child_module):
                 with contextlib.suppress(ImportError):
-                    ret = importlib.import_module(f'.{attr}', child)
+                    return importlib.import_module(f'.{attr}', child)
 
-            if ret is _NO_ATTRIBUTE:
-                raise AttributeError(f'module {parent} has no attribute {attr}')
-
-            callback(attr)
-            return ret
+            return _NO_ATTRIBUTE
 
     # Python 3.6 does not have module level __getattr__
     # https://peps.python.org/pep-0562/