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Co-authored-by: David Hewitt <mail@davidhewitt.dev>

guide/src/class.md

@@ -1290,7 +1290,7 @@ Python::with_gil(|py| {
 # .unwrap();
 ```
 
-WARNING: `Py::new` and `.into_py` are currently inconsistent. Note how the constructed value is _not_ an instance of the specific variant. For this reason, constructing values is only recommended using `.into_py`.
+WARNING: `Py::new` and `.into_pyobject` are currently inconsistent. Note how the constructed value is _not_ an instance of the specific variant. For this reason, constructing values is only recommended using `.into_pyobject`.
 
 ```rust
 # use pyo3::prelude::*;

src/conversion.rs

@@ -42,6 +42,7 @@ use std::convert::Infallible;
 /// # use pyo3::ffi;
 /// #
 /// Python::with_gil(|py| {
+///     // ERROR: calling `.as_ptr()` will throw away the temporary object and leave `ptr` dangling.
 ///     let ptr: *mut ffi::PyObject = 0xabad1dea_u32.into_pyobject(py)?.as_ptr();
 ///
 ///     let isnt_a_pystring = unsafe {

tests/test_buffer_protocol.rs

@@ -78,7 +78,7 @@ fn test_buffer_referenced() {
             .into_pyobject(py)
             .unwrap();
 
-            let buf = PyBuffer::<u8>::get(instance.as_any()).unwrap();
+            let buf = PyBuffer::<u8>::get(&instance).unwrap();
             assert_eq!(buf.to_vec(py).unwrap(), input);
             drop(instance);
             buf