Support for Python 3.15

.github/workflows/release.yml

@@ -102,7 +102,14 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: 3.x
+          # --find-interpreter picks up whatever is on PATH, so install every supported version explicitly
+          python-version: |
+            3.10
+            3.11
+            3.12
+            3.13
+            3.14
+            3.15
       - name: Build wheels
         uses: PyO3/maturin-action@v1
         with:

.github/workflows/test.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: warp-ubuntu-latest-x64-4x
     strategy:
       matrix:
-        python: [ "3.10", "3.11", "3.12", "3.13", "3.14" ]
+        python: [ "3.10", "3.11", "3.12", "3.13", "3.14", "3.15" ]
     env:
       UV_PYTHON: ${{ matrix.python }}
     steps:

Cargo.toml

@@ -12,6 +12,6 @@ crate-type = ["cdylib"]
 doc = false
 
 [dependencies]
-pyo3 = { version = "0.25.1", features = ["extension-module"] }
+pyo3 = { version = "0.30.1", features = ["extension-module"] }
 tracing-subscriber = { version = "0.3", features = ["fmt", "env-filter"] }
-restate-sdk-shared-core = { version = "8.1.0", features = ["request_identity", "sha2_random_seed", "rust_crypto"] }
+restate-sdk-shared-core = { version = "8.2.0", features = ["request_identity", "sha2_random_seed", "rust_crypto"] }

python/restate/ext/pydantic/_serde.py

@@ -15,7 +15,7 @@ def __init__(self, model_type: type[T]):
         Args:
             model_type (typing.Type[T]): The Pydantic model type to serialize/deserialize.
         """
-        self._model_type = TypeAdapter(model_type)
+        self._model_type: TypeAdapter[T] = TypeAdapter(model_type)
 
     def deserialize(self, buf: bytes) -> T | None:
         """Deserializes a bytearray to a Pydantic model.
@@ -41,5 +41,5 @@ def serialize(self, obj: T | None) -> bytes:
         """
         if obj is None:
             return b""
-        tpe = TypeAdapter(type(obj))
+        tpe: TypeAdapter[T] = TypeAdapter(type(obj))
         return tpe.dump_json(obj)

src/lib.rs

@@ -16,7 +16,7 @@ const CURRENT_VERSION: &str = env!("CARGO_PKG_VERSION");
 
 // Data model
 
-#[pyclass]
+#[pyclass(from_py_object)]
 #[derive(Clone)]
 struct PyHeader {
     #[pyo3(get, set)]
@@ -80,7 +80,7 @@ struct PyVoid;
 #[pyclass]
 struct PySuspended;
 
-#[pyclass]
+#[pyclass(from_py_object)]
 #[derive(Clone)]
 struct PyFailure {
     #[pyo3(get, set)]
@@ -112,7 +112,7 @@ impl PyFailure {
     }
 }
 
-#[pyclass]
+#[pyclass(from_py_object)]
 #[derive(Clone)]
 struct PyExponentialRetryConfig {
     #[pyo3(get, set)]
@@ -210,7 +210,7 @@ impl From<PyFailure> for Error {
     }
 }
 
-#[pyclass]
+#[pyclass(from_py_object)]
 #[derive(Clone)]
 struct PyStateKeys {
     #[pyo3(get, set)]
@@ -267,7 +267,7 @@ struct PyDoProgressExecuteRun {
 #[pyclass]
 struct PyDoProgressCancelSignalReceived;
 
-#[pyclass]
+#[pyclass(from_py_object)]
 #[derive(Clone)]
 pub struct PyUnresolvedFuture {
     inner: UnresolvedFuture,
@@ -1026,7 +1026,7 @@ For further info on error handling, refer to https://docs.restate.dev/develop/py
     }
 }
 
-#[pymodule]
+#[pymodule(gil_used = true)]
 fn _internal(m: &Bound<'_, PyModule>) -> PyResult<()> {
     use tracing_subscriber::EnvFilter;