Avoid deprecation warnings in example projects.

Author: adamreichold

examples/linalg/src/lib.rs

@@ -5,7 +5,7 @@ use pyo3::prelude::{pymodule, PyErr, PyModule, PyResult, Python};
 
 #[pymodule]
 fn rust_linalg(_py: Python<'_>, m: &PyModule) -> PyResult<()> {
-    #[pyfn(m, "inv")]
+    #[pyfn(m)]
     fn inv<'py>(py: Python<'py>, x: PyReadonlyArray2<'py, f64>) -> PyResult<&'py PyArray2<f64>> {
         let x = x
             .as_array()

examples/simple-extension/src/lib.rs

@@ -20,7 +20,8 @@ fn rust_ext(_py: Python<'_>, m: &PyModule) -> PyResult<()> {
     }
 
     // wrapper of `axpy`
-    #[pyfn(m, "axpy")]
+    #[pyfn(m)]
+    #[pyo3(name = "axpy")]
     fn axpy_py<'py>(
         py: Python<'py>,
         a: f64,
@@ -33,14 +34,16 @@ fn rust_ext(_py: Python<'_>, m: &PyModule) -> PyResult<()> {
     }
 
     // wrapper of `mult`
-    #[pyfn(m, "mult")]
+    #[pyfn(m)]
+    #[pyo3(name = "mult")]
     fn mult_py(a: f64, x: &PyArrayDyn<f64>) {
         let x = unsafe { x.as_array_mut() };
         mult(a, x);
     }
 
     // wrapper of `conj`
-    #[pyfn(m, "conj")]
+    #[pyfn(m)]
+    #[pyo3(name = "conj")]
     fn conj_py<'py>(py: Python<'py>, x: PyReadonlyArrayDyn<'_, c64>) -> &'py PyArrayDyn<c64> {
         conj(x.as_array()).into_pyarray(py)
     }