undo some

Author: jonathandung

Doc/library/inspect.rst

@@ -1614,8 +1614,8 @@ properties, will be invoked and :meth:`~object.__getattr__` and
 may be called.
 
 For cases where you want passive introspection, like documentation tools, this
-can be inconvenient. :func:`getattr_static` has the same signature as :func:`getattr`
-(modulo positional-only differences), but avoids executing code when it fetches attributes.
+can be inconvenient. :func:`getattr_static` has a similar signature as :func:`getattr`
+but avoids executing code when it fetches attributes.
 
 .. function:: getattr_static(obj, attr)
               getattr_static(obj, attr, default)
@@ -1645,15 +1645,18 @@ for arbitrary getset descriptors invoking these may trigger
 code execution::
 
    # example code for resolving the builtin descriptor types
-   slot_descriptor = type(slice.step)
-   getset_descriptor = type(property.__dict__['__name__'])
+   class _foo:
+       __slots__ = ['foo']
+
+   slot_descriptor = type(_foo.foo)
+   getset_descriptor = type(type(open(__file__)).name)
    wrapper_descriptor = type(str.__dict__['__add__'])
    descriptor_types = (slot_descriptor, getset_descriptor, wrapper_descriptor)
 
    result = getattr_static(some_object, 'foo')
-   if isinstance(result, descriptor_types):
+   if type(result) in descriptor_types:
        try:
-           result = result.__get__(some_object)
+           result = result.__get__()
        except AttributeError:
            # descriptors can raise AttributeError to
            # indicate there is no underlying value