Macro type_hint_identifier 

macro_rules! type_hint_identifier {
    ("builtins", $name:expr) => { ... };
    ($module:expr, $name:expr) => { ... };
}

Builds a type hint from a module name and a member name in the module

use pyo3::type_hint_identifier;
use pyo3::inspect::PyStaticExpr;

const T: PyStaticExpr = type_hint_identifier!("datetime", "date");
assert_eq!(T.to_string(), "datetime.date");

const T2: PyStaticExpr = type_hint_identifier!("builtins", "int");
assert_eq!(T2.to_string(), "int");