feature gate deprecated APIs for PyList

guide/src/migration.md

@@ -60,7 +60,7 @@ To migrate, switch all type casts to use `obj.downcast()` instead of `try_from(o
 
 Before:
 
-```rust
+```rust,ignore
 # #![allow(deprecated)]
 # use pyo3::prelude::*;
 # use pyo3::types::{PyInt, PyList};
@@ -75,7 +75,7 @@ Python::with_gil(|py| {
 
 After:
 
-```rust
+```rust,ignore
 # use pyo3::prelude::*;
 # use pyo3::types::{PyInt, PyList};
 # fn main() -> PyResult<()> {
@@ -1089,7 +1089,7 @@ An additional advantage of using Rust's indexing conventions for these types is
 that these types can now also support Rust's indexing operators as part of a
 consistent API:
 
-```rust
+```rust,ignore
 #![allow(deprecated)]
 use pyo3::{Python, types::PyList};
 

guide/src/types.md

@@ -330,8 +330,10 @@ For a `&PyAny` object reference `any` where the underlying object is a Python-na
 a list:
 
 ```rust
+# #![allow(unused_imports)]
 # use pyo3::prelude::*;
 # use pyo3::types::PyList;
+# #[cfg(feature = "gil-refs")]
 # Python::with_gil(|py| -> PyResult<()> {
 #[allow(deprecated)] // PyList::empty is part of the deprecated "GIL Refs" API.
 let obj: &PyAny = PyList::empty(py);
@@ -390,8 +392,10 @@ To see all Python types exposed by `PyO3` consult the [`pyo3::types`][pyo3::type
 **Conversions:**
 
 ```rust
+# #![allow(unused_imports)]
 # use pyo3::prelude::*;
 # use pyo3::types::PyList;
+# #[cfg(feature = "gil-refs")]
 # Python::with_gil(|py| -> PyResult<()> {
 #[allow(deprecated)] // PyList::empty is part of the deprecated "GIL Refs" API.
 let list = PyList::empty(py);

src/types/any.rs

@@ -2736,13 +2736,13 @@ class SimpleClass:
     #[test]
     fn test_is_empty() {
         Python::with_gil(|py| {
-            let empty_list: &PyAny = PyList::empty(py);
+            let empty_list = PyList::empty_bound(py).into_any();
             assert!(empty_list.is_empty().unwrap());
 
-            let list: &PyAny = PyList::new(py, vec![1, 2, 3]);
+            let list = PyList::new_bound(py, vec![1, 2, 3]).into_any();
             assert!(!list.is_empty().unwrap());
 
-            let not_container = 5.to_object(py).into_ref(py);
+            let not_container = 5.to_object(py).into_bound(py);
             assert!(not_container.is_empty().is_err());
         });
     }