1ndahous3 · Oct 29, 2026 · Oct 29, 2026 · youknowone · Oct 29, 2026
diff --git a/Lib/test/test_pickle.py b/Lib/test/test_pickle.py
@@ -97,10 +97,6 @@ def loads(self, buf, **kwds):
         u = self.unpickler(f, **kwds)
         return u.load()
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON
-    def test_c_methods(self):
-        return super().test_c_methods()
-
     @unittest.expectedFailureIf(sys.getrecursionlimit() == 256, "TODO: RUSTPYTHON; default debug recursion limit is 256")
     def test_deep_nested_struct_frozendict(self):
         return super().test_deep_nested_struct_frozendict()
@@ -126,10 +122,6 @@ def loads(self, buf, **kwds):
     test_find_class = None
     test_custom_find_class = None
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON
-    def test_c_methods(self):
-        return super().test_c_methods()
-
 
 class PersistentPicklerUnpicklerMixin(object):
 

diff --git a/Lib/test/test_pickletools.py b/Lib/test/test_pickletools.py
@@ -66,10 +66,6 @@ def test_optimize_binput_and_memoize(self):
         self.assertIs(unpickled2[1], unpickled2[2])
         self.assertNotIn(pickle.BINPUT, pickled2)
 
-    @unittest.expectedFailure  # TODO: RUSTPYTHON
-    def test_c_methods(self):
-        return super().test_c_methods()
-
 
 class SimpleReader:
     def __init__(self, data):

diff --git a/crates/vm/src/builtins/staticmethod.rs b/crates/vm/src/builtins/staticmethod.rs
@@ -1,17 +1,32 @@
 use super::{
-    PyGenericAlias, PyStr, PyType, PyTypeRef,
+    PyDictRef, PyGenericAlias, PyStr, PyType, PyTypeRef,
+    builtin_func::PyNativeFunction,
     classmethod::{
         descriptor_get_wrapped_attribute, descriptor_set_wrapped_attribute, functools_wraps,
     },
+    type_::{PyAttributes, rendered_item_doc},
 };
 use crate::{
     AsObject, Context, Py, PyObject, PyObjectRef, PyPayload, PyRef, PyResult, VirtualMachine,
     class::{PyClassDef, PyClassImpl},
+    common::{hash::HashSecret, lock::PyMutex, wtf8::Wtf8Buf},
     function::{FuncArgs, PySetterValue},
     object::PyAtomicRef,
     types::{Callable, Constructor, GetDescriptor, Initializer, Representable},
 };
 
+// Context::genesis builds native descriptors before the first interpreter
+// chooses its hash seed. Delay hashing their metadata until that seed exists.
+rustpython_common::static_cell! {
+    static NATIVE_METADATA: PyMutex<NativeMetadata>;
+}
+
+#[derive(Default)]
+struct NativeMetadata {
+    hash_secret: Option<&'static HashSecret>,
+    pending: Vec<(PyDictRef, PyAttributes)>,
+}
+
 #[pyclass(module = false, name = "staticmethod", traverse)]
 #[derive(Debug)]
 pub struct PyStaticMethod {
@@ -75,6 +90,58 @@ impl Constructor for PyStaticMethod {
 }
 
 impl PyStaticMethod {
+    pub(crate) fn new_native(
+        callable: PyRef<PyNativeFunction>,
+        class: &Py<PyType>,
+        ctx: &Context,
+    ) -> PyRef<Self> {
+        let mut qualname = class.heaptype_ext.as_ref().map_or_else(
+            || Wtf8Buf::from_string(class.name().to_string()),
+            |ext| ext.qualname.read().as_wtf8().to_owned(),
+        );
+        qualname.push_str(".");
+        qualname.push_str(callable.value.name);
+        let attrs = [
+            (
+                identifier!(ctx, __module__),
+                callable.module.load_owned().unwrap_or_else(|| ctx.none()),
+            ),
+            (
+                identifier!(ctx, __name__),
+                ctx.new_str(callable.value.name).into(),
+            ),
+            (identifier!(ctx, __qualname__), ctx.new_str(qualname).into()),
+            (
+                identifier!(ctx, __doc__),
+                rendered_item_doc(callable.value.name, callable.value.item_doc())
+                    .map_or_else(|| ctx.none(), |doc| ctx.new_str(doc).into()),
+            ),
+        ]
+        .into_iter()
+        .collect();
+        let dict = ctx.new_dict();
+        let wrapper = PyRef::new_ref(
+            Self::new(callable.into()),
+            ctx.types.staticmethod_type.to_owned(),
+            Some(dict.clone()),
+        );
+        let mut metadata = NATIVE_METADATA.get_or_init(PyMutex::default).lock();
+        if let Some(secret) = metadata.hash_secret {
+            dict.entries.initialize_attributes(attrs, secret);
+        } else {
+            metadata.pending.push((dict, attrs));
+        }
+        wrapper
+    }
+
+    pub(crate) fn init_native_metadata(secret: &'static HashSecret) {
+        let mut metadata = NATIVE_METADATA.get_or_init(PyMutex::default).lock();
+        metadata.hash_secret = Some(secret);
+        for (dict, attrs) in metadata.pending.drain(..) {
+            dict.entries.initialize_attributes(attrs, secret);
+        }
+    }
+
     #[must_use]
     pub fn new(callable: PyObjectRef) -> Self {
         Self {

diff --git a/crates/vm/src/dict_inner.rs b/crates/vm/src/dict_inner.rs
@@ -252,6 +252,33 @@ impl<T> Default for Dict<T> {
     }
 }
 
+impl Dict {
+    // Initialize an unpublished, empty dict from unique interned names. This
+    // needs the process hash secret, but cannot call Python during bootstrap.
+    pub(crate) fn initialize_attributes(
+        &self,
+        attrs: crate::builtins::type_::PyAttributes,
+        secret: &hash::HashSecret,
+    ) {
+        let mut inner = self.write();
+        assert_eq!(inner.used, 0);
+        inner.entries = attrs
+            .into_iter()
+            .map(|(key, value)| {
+                Some(DictEntry {
+                    hash: secret.hash_bytes(key.as_bytes()),
+                    key: key.to_owned().into(),
+                    index: 0,
+                    value,
+                })
+            })
+            .collect();
+        inner.used = inner.entries.len();
+        let size = inner.used * 2;
+        inner.resize(size);
+    }
+}
+
 #[derive(Clone)]
 struct DictEntry<T> {
     hash: HashValue,

diff --git a/crates/vm/src/function/method.rs b/crates/vm/src/function/method.rs
@@ -1,7 +1,7 @@
 use crate::{
     Context, Py, PyObjectRef, PyPayload, PyRef, VirtualMachine,
     builtins::{
-        PyType,
+        PyStaticMethod, PyType,
         builtin_func::{PyNativeFunction, PyNativeMethod},
         descriptor::{PyClassMethodDescriptor, PyMethodDescriptor},
     },
@@ -183,7 +183,7 @@ impl PyMethodDef {
         } else if self.flags.contains(PyMethodFlags::CLASS) {
             self.build_classmethod(ctx, class).into()
         } else if self.flags.contains(PyMethodFlags::STATIC) {
-            self.build_staticmethod(ctx, class).into()
+            PyStaticMethod::new_native(self.build_staticmethod(ctx, class), class, ctx).into()
         } else {
             unreachable!()
         }

diff --git a/crates/vm/src/vm/mod.rs b/crates/vm/src/vm/mod.rs
@@ -1047,13 +1047,14 @@ static HASH_SECRET: std::sync::OnceLock<HashSecret> = std::sync::OnceLock::new()
 /// `hash_seed` is used only when the secret is not set yet. `None` draws a
 /// random seed. A later call keeps the existing secret and ignores `hash_seed`.
 pub(crate) fn init_hash_secret(hash_seed: Option<u32>) {
-    let _ = HASH_SECRET.get_or_init(|| {
+    let secret = HASH_SECRET.get_or_init(|| {
         let seed = hash_seed.unwrap_or_else(|| {
             // os_random is expensive, but this runs only once per process.
             u32::from_ne_bytes(rustpython_common::rand::os_random())
         });
         HashSecret::new(seed)
     });
+    builtins::PyStaticMethod::init_native_metadata(secret);
 }
 
 /// Process-wide `_Py_HashSecret` used for str/bytes hashing.

diff --git a/extra_tests/snippets/builtin_type.py b/extra_tests/snippets/builtin_type.py
@@ -817,3 +817,10 @@ class Diamond(FirstChild, SecondChild):
 value = Diamond()
 value.left = 43
 assert value.left == 43
+
+# Native static methods retain their descriptor in the class dictionary.
+native_static = str.__dict__["maketrans"]
+assert isinstance(native_static, staticmethod)
+assert native_static.__func__ is str.maketrans
+for name in ("__module__", "__name__", "__qualname__", "__doc__"):
+    assert getattr(native_static, name) == getattr(str.maketrans, name)