pyo3 to 0.17

Author: kclowes

Cargo.toml

@@ -8,7 +8,7 @@ repository = "https://github.com/davesque/blake2b-py"
 description = "Blake2b hashing in Rust with Python bindings."
 
 [dependencies]
-pyo3 = { version = "~0.20", features = ["extension-module"] }
+pyo3 = { version = "~0.17", features = ["extension-module"] }
 
 [dev-dependencies]
 hex = "~0.4"

src/lib.rs

@@ -159,6 +159,7 @@ fn decode_and_compress(py: Python, input: Vec<u8>) -> PyResult<PyObject> {
 }
 
 /// Functions for calculating blake2b hashes.
+#[pymodule]
 fn blake2b(_py: Python, m: &PyModule) -> PyResult<()> {
     m.add_wrapped(wrap_pyfunction!(decode_parameters))?;
     m.add_wrapped(wrap_pyfunction!(compress))?;