macro_rules! wrap_pyfunction {
    ($function:path) => { ... };
    ($function:path, $py_or_module:expr) => { ... };
}Available on crate feature 
macros only.Expand description
Wraps a Rust function annotated with #[pyfunction].
This can be used with PyModule::add_function to
add free functions to a PyModule - see its documentation for more
information.