Make HASH/HASHXOF types immutable (RustPython#7131)

moreal · web-flow · commit 809b3e0d5e18 · 2026-02-14T20:37:47.000+09:00
diff --git a/Lib/test/test_hashlib.py b/Lib/test/test_hashlib.py
@@ -992,8 +992,6 @@ def test_hash_disallow_instantiation(self):
         support.check_disallow_instantiation(self, HASH)
         support.check_disallow_instantiation(self, HASHXOF)
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_readonly_types(self):
         for algorithm, constructors in self.constructors_to_test.items():
             # all other types have DISALLOW_INSTANTIATION
diff --git a/crates/stdlib/src/hashlib.rs b/crates/stdlib/src/hashlib.rs
@@ -110,7 +110,7 @@ pub mod _hashlib {
         }
     }
 
-    #[pyclass(with(Representable))]
+    #[pyclass(with(Representable), flags(IMMUTABLETYPE))]
     impl PyHasher {
         fn new(name: &str, d: HashWrapper) -> Self {
             Self {
@@ -183,7 +183,7 @@ pub mod _hashlib {
         }
     }
 
-    #[pyclass]
+    #[pyclass(flags(IMMUTABLETYPE))]
     impl PyHasherXof {
         fn new(name: &str, d: HashXofWrapper) -> Self {
             Self {

Original file line number	Diff line number	Diff line change
`@@ -110,7 +110,7 @@ pub mod _hashlib {`
`110`	`110`	`}`
`111`	`111`	`}`
`112`	`112`
`113`		`- #[pyclass(with(Representable))]`
	`113`	`+ #[pyclass(with(Representable), flags(IMMUTABLETYPE))]`
`114`	`114`	`impl PyHasher {`
`115`	`115`	`fn new(name: &str, d: HashWrapper) -> Self {`
`116`	`116`	`Self {`
`@@ -183,7 +183,7 @@ pub mod _hashlib {`
`183`	`183`	`}`
`184`	`184`	`}`
`185`	`185`
`186`		`- #[pyclass]`
	`186`	`+ #[pyclass(flags(IMMUTABLETYPE))]`
`187`	`187`	`impl PyHasherXof {`
`188`	`188`	`fn new(name: &str, d: HashXofWrapper) -> Self {`
`189`	`189`	`Self {`