fix: Render `py::object` as `Any`

include/pybind11/cast.h

@@ -906,6 +906,10 @@ struct handle_type_name<function> {
     static constexpr auto name = const_name("Callable");
 };
 template <>
+struct handle_type_name<object> {
+    static constexpr auto name = const_name("Any");
+};
+template <>
 struct handle_type_name<handle> {
     static constexpr auto name = handle_type_name<object>::name;
 };

tests/test_callbacks.py

@@ -221,5 +221,5 @@ def test_custom_func2():
 def test_callback_docstring():
     assert (
         m.test_tuple_unpacking.__doc__.strip()
-        == "test_tuple_unpacking(arg0: Callable) -> object"
+        == "test_tuple_unpacking(arg0: Callable) -> Any"
     )

tests/test_factory_constructors.py

@@ -77,7 +77,7 @@ def test_init_factory_signature(msg):
             1. m.factory_constructors.TestFactory1(arg0: m.factory_constructors.tag.unique_ptr_tag, arg1: int)
             2. m.factory_constructors.TestFactory1(arg0: str)
             3. m.factory_constructors.TestFactory1(arg0: m.factory_constructors.tag.pointer_tag)
-            4. m.factory_constructors.TestFactory1(arg0: object, arg1: int, arg2: object)
+            4. m.factory_constructors.TestFactory1(arg0: Any, arg1: int, arg2: Any)
 
         Invoked with: 'invalid', 'constructor', 'arguments'
     """
@@ -95,7 +95,7 @@ def test_init_factory_signature(msg):
 
         3. __init__(self: m.factory_constructors.TestFactory1, arg0: m.factory_constructors.tag.pointer_tag) -> None
 
-        4. __init__(self: m.factory_constructors.TestFactory1, arg0: object, arg1: int, arg2: object) -> None
+        4. __init__(self: m.factory_constructors.TestFactory1, arg0: Any, arg1: int, arg2: Any) -> None
     """
     )
 

tests/test_numpy_vectorize.py

@@ -148,7 +148,7 @@ def test_docs(doc):
     assert (
         doc(m.vectorized_func)
         == """
-        vectorized_func(arg0: numpy.ndarray[numpy.int32], arg1: numpy.ndarray[numpy.float32], arg2: numpy.ndarray[numpy.float64]) -> object
+        vectorized_func(arg0: numpy.ndarray[numpy.int32], arg1: numpy.ndarray[numpy.float32], arg2: numpy.ndarray[numpy.float64]) -> Any
     """
     )
 
@@ -218,7 +218,7 @@ def test_passthrough_arguments(doc):
                 "arg6: numpy.ndarray[numpy.float64]",
             ]
         )
-        + ") -> object"
+        + ") -> Any"
     )
 
     b = np.array([[10, 20, 30]], dtype="float64")