write some sonnet code

BallanceTasSonnet/src/lib.rs

@@ -0,0 +1,16 @@
+use pyo3::prelude::*;
+
+pub(crate) mod utils;
+pub(crate) mod tasfile;
+
+/// A Python module implemented in Rust.
+#[pymodule]
+mod BallanceTasSonnet {
+    use pyo3::prelude::*;
+
+    /// Formats the sum of two numbers as string.
+    #[pyfunction]
+    fn sum_as_string(a: usize, b: usize) -> PyResult<String> {
+        Ok((a + b).to_string())
+    }
+}