FIX: fixes __slots__ hides class variables astropy#168

CHANGES.rst

@@ -4,6 +4,7 @@ Changes in sphinx-automodapi
 0.17.0 (unreleased)
 -------------------
 
+- Fixes fixes ``__slots__`` hides class variables [#168]
 - Minimum supported Python version is now 3.8. [#177]
 
 0.16.0 (2023-08-17)

sphinx_automodapi/automodsumm.py

@@ -83,7 +83,6 @@ class members that are inherited from a base class. This value can be
 .. _sphinx.ext.inheritance_diagram: http://sphinx-doc.org/latest/ext/inheritance.html
 """
 
-import abc
 import inspect
 import os
 import re
@@ -555,25 +554,11 @@ def get_members_class(obj, typ, include_public=[],
                 items = []
 
                 # using dir gets all of the attributes, including the elements
-                # from the base class, otherwise use __slots__ or __dict__
+                # from the base class, otherwise use __dict__
                 if include_base:
                     names = dir(obj)
                 else:
-                    # Classes deriving from an ABC using the `abc` module will
-                    # have an empty `__slots__` attribute in Python 3, unless
-                    # other slots were declared along the inheritance chain. If
-                    # the ABC-derived class has empty slots, we'll use the
-                    # class `__dict__` instead.
-                    declares_slots = (
-                        hasattr(obj, '__slots__') and
-                        not (issubclass(type(obj), abc.ABCMeta) and
-                             len(obj.__slots__) == 0)
-                    )
-
-                    if declares_slots:
-                        names = tuple(getattr(obj, '__slots__'))
-                    else:
-                        names = getattr(obj, '__dict__').keys()
+                    names = getattr(obj, '__dict__').keys()
 
                 for name in names:
                     try: