Version should be string

Thanks :

https://github.com/emmett-framework/granian/blob/d500b49a3db1de380f0a1f022263066a79c77af1/src/lib.rs#L27-L44

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "resvg_py"
-version = "0.1.4"
+version = "0.1.5"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "resvg-py"
-version = "0.1.4"
+version = "0.1.5"
 description = ""
 authors = ["baseplate-admin <61817579+baseplate-admin@users.noreply.github.com>"]
 readme = "README.md"

resvg_py.pyi

@@ -1,5 +1,8 @@
 from typing import Literal
 
+
+__version__ : str
+
 def svg_to_bytes(
     svg_string: str | None = None,
     svg_path: str | None = None,
@@ -56,5 +59,3 @@ def svg_to_bytes(
     """
 
     ...
-
-def version() -> str: ...

src/rust/lib.rs

@@ -7,6 +7,7 @@ Based on
 use pyo3::prelude::*;
 use resvg;
 
+
 #[derive(Clone, Copy, PartialEq, Debug)]
 enum FitTo {
     /// Keep original size.
@@ -351,13 +352,17 @@ fn svg_to_bytes(
 
 #[pyfunction]
 #[pyo3(name = "version")]
-fn version() -> PyResult<String> {
-    Ok(env!("CARGO_PKG_VERSION").to_owned())
+fn get_version() -> &'static str {
+    static VERSION :  std::sync::OnceLock<String> =  std::sync::OnceLock::new();
+
+    VERSION.get_or_init(||{
+        env!("CARGO_PKG_VERSION").to_owned()
+    })
 }
 /// A Python module implemented in Rust.
 #[pymodule]
 fn resvg_py(_py: Python, m: &Bound<'_, PyModule>) -> PyResult<()> {
+    m.add("__version__",get_version())?;
     m.add_function(wrap_pyfunction!(svg_to_bytes, m)?)?;
-    m.add_function(wrap_pyfunction!(version, m)?)?;
     Ok(())
 }