diff --git a/crates/stdlib/src/array.rs b/crates/stdlib/src/array.rs
index 2e28714611c..463027d9baa 100644
--- a/crates/stdlib/src/array.rs
+++ b/crates/stdlib/src/array.rs
@@ -996,7 +996,6 @@ mod array {
             }
         }
 
-        #[pymethod]
         fn __getitem__(&self, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult {
             self.getitem_inner(&needle, vm)
         }
@@ -1038,7 +1037,6 @@ mod array {
             }
         }
 
-        #[pymethod]
         fn __setitem__(
             zelf: &Py<Self>,
             needle: PyObjectRef,
@@ -1055,7 +1053,6 @@ mod array {
             }
         }
 
-        #[pymethod]
         fn __delitem__(&self, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
             self.delitem_inner(&needle, vm)
         }
diff --git a/crates/stdlib/src/contextvars.rs b/crates/stdlib/src/contextvars.rs
index 658d0906b24..329342fe6dc 100644
--- a/crates/stdlib/src/contextvars.rs
+++ b/crates/stdlib/src/contextvars.rs
@@ -189,7 +189,6 @@ mod _contextvars {
             }
         }
 
-        #[pymethod]
         fn __getitem__(
             &self,
             var: PyRef<ContextVar>,
diff --git a/crates/stdlib/src/mmap.rs b/crates/stdlib/src/mmap.rs
index 191a330d536..d3895521096 100644
--- a/crates/stdlib/src/mmap.rs
+++ b/crates/stdlib/src/mmap.rs
@@ -1240,12 +1240,10 @@ mod mmap {
             Ok(())
         }
 
-        #[pymethod]
         fn __getitem__(&self, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult<PyObjectRef> {
             self.getitem_inner(&needle, vm)
         }
 
-        #[pymethod]
         fn __setitem__(
             zelf: &Py<Self>,
             needle: PyObjectRef,
diff --git a/crates/vm/src/builtins/bytearray.rs b/crates/vm/src/builtins/bytearray.rs
index e1e437310eb..0f9dce7230b 100644
--- a/crates/vm/src/builtins/bytearray.rs
+++ b/crates/vm/src/builtins/bytearray.rs
@@ -238,12 +238,10 @@ impl PyByteArray {
         Ok(zelf)
     }
 
-    #[pymethod]
     fn __getitem__(&self, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         self._getitem(&needle, vm)
     }
 
-    #[pymethod]
     pub fn __delitem__(&self, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
         self._delitem(&needle, vm)
     }
@@ -549,7 +547,6 @@ impl PyByteArray {
 
 #[pyclass]
 impl Py<PyByteArray> {
-    #[pymethod]
     fn __setitem__(
         &self,
         needle: PyObjectRef,
diff --git a/crates/vm/src/builtins/bytes.rs b/crates/vm/src/builtins/bytes.rs
index 57aed481dd4..01e67358aae 100644
--- a/crates/vm/src/builtins/bytes.rs
+++ b/crates/vm/src/builtins/bytes.rs
@@ -241,7 +241,6 @@ impl PyBytes {
         PyBytesInner::maketrans(from, to, vm)
     }
 
-    #[pymethod]
     fn __getitem__(&self, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         self._getitem(&needle, vm)
     }
diff --git a/crates/vm/src/builtins/dict.rs b/crates/vm/src/builtins/dict.rs
index 19b14688994..43f7100e963 100644
--- a/crates/vm/src/builtins/dict.rs
+++ b/crates/vm/src/builtins/dict.rs
@@ -225,7 +225,6 @@ impl PyDict {
         self.entries.contains(vm, &*key)
     }
 
-    #[pymethod]
     fn __delitem__(&self, key: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
         self.inner_delitem(&*key, vm)
     }
@@ -235,7 +234,6 @@ impl PyDict {
         self.entries.clear()
     }
 
-    #[pymethod]
     fn __setitem__(
         &self,
         key: PyObjectRef,
@@ -372,7 +370,6 @@ impl Py<PyDict> {
         Ok(Implemented(true))
     }
 
-    #[pymethod]
     #[cfg_attr(feature = "flame-it", flame("PyDictRef"))]
     fn __getitem__(&self, key: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         self.inner_getitem(&*key, vm)
diff --git a/crates/vm/src/builtins/genericalias.rs b/crates/vm/src/builtins/genericalias.rs
index 99c1eacc3ec..e9150e4c088 100644
--- a/crates/vm/src/builtins/genericalias.rs
+++ b/crates/vm/src/builtins/genericalias.rs
@@ -189,7 +189,6 @@ impl PyGenericAlias {
         }
     }
 
-    #[pymethod]
     fn __getitem__(zelf: PyRef<Self>, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         let new_args = subs_parameters(
             zelf.to_owned().into(),
diff --git a/crates/vm/src/builtins/list.rs b/crates/vm/src/builtins/list.rs
index eaff4a54688..02475ee12b6 100644
--- a/crates/vm/src/builtins/list.rs
+++ b/crates/vm/src/builtins/list.rs
@@ -213,7 +213,6 @@ impl PyList {
         }
     }
 
-    #[pymethod]
     fn __getitem__(&self, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         self._getitem(&needle, vm)
     }
@@ -228,7 +227,6 @@ impl PyList {
         }
     }
 
-    #[pymethod]
     fn __setitem__(
         &self,
         needle: PyObjectRef,
@@ -308,7 +306,6 @@ impl PyList {
         }
     }
 
-    #[pymethod]
     fn __delitem__(&self, subscript: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
         self._delitem(&subscript, vm)
     }
diff --git a/crates/vm/src/builtins/mappingproxy.rs b/crates/vm/src/builtins/mappingproxy.rs
index c8f77c5c5fc..f7fb64fa6ab 100644
--- a/crates/vm/src/builtins/mappingproxy.rs
+++ b/crates/vm/src/builtins/mappingproxy.rs
@@ -111,7 +111,6 @@ impl PyMappingProxy {
         )?))
     }
 
-    #[pymethod]
     pub fn __getitem__(&self, key: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         self.get_inner(key.clone(), vm)?
             .ok_or_else(|| vm.new_key_error(key))
diff --git a/crates/vm/src/builtins/memory.rs b/crates/vm/src/builtins/memory.rs
index 5ca4257cded..6db260c80e0 100644
--- a/crates/vm/src/builtins/memory.rs
+++ b/crates/vm/src/builtins/memory.rs
@@ -659,7 +659,6 @@ impl PyMemoryView {
         self.release();
     }
 
-    #[pymethod]
     fn __getitem__(zelf: PyRef<Self>, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         zelf.try_not_released(vm)?;
         if zelf.desc.ndim() == 0 {
@@ -682,7 +681,6 @@ impl PyMemoryView {
         }
     }
 
-    #[pymethod]
     fn __delitem__(&self, _needle: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
         if self.desc.readonly {
             return Err(vm.new_type_error("cannot modify read-only memory"));
@@ -847,7 +845,6 @@ impl PyMemoryView {
 
 #[pyclass]
 impl Py<PyMemoryView> {
-    #[pymethod]
     fn __setitem__(
         &self,
         needle: PyObjectRef,
diff --git a/crates/vm/src/builtins/range.rs b/crates/vm/src/builtins/range.rs
index 957a66020c1..49f50ffbaa2 100644
--- a/crates/vm/src/builtins/range.rs
+++ b/crates/vm/src/builtins/range.rs
@@ -279,7 +279,6 @@ impl PyRange {
         (vm.ctx.types.range_type.to_owned(), range_parameters_tuple)
     }
 
-    #[pymethod]
     fn __getitem__(&self, subscript: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         match RangeIndex::try_from_object(vm, subscript)? {
             RangeIndex::Slice(slice) => {
diff --git a/crates/vm/src/builtins/str.rs b/crates/vm/src/builtins/str.rs
index d14bcd92bbe..4931a748198 100644
--- a/crates/vm/src/builtins/str.rs
+++ b/crates/vm/src/builtins/str.rs
@@ -584,7 +584,6 @@ impl PyStr {
         Ok(item)
     }
 
-    #[pymethod]
     fn __getitem__(&self, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         self._getitem(&needle, vm)
     }
diff --git a/crates/vm/src/builtins/tuple.rs b/crates/vm/src/builtins/tuple.rs
index e7271f9b6fd..f6eff5b91e5 100644
--- a/crates/vm/src/builtins/tuple.rs
+++ b/crates/vm/src/builtins/tuple.rs
@@ -315,7 +315,6 @@ impl PyTuple {
         }
     }
 
-    #[pymethod]
     fn __getitem__(&self, needle: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         self._getitem(&needle, vm)
     }
diff --git a/crates/vm/src/builtins/type.rs b/crates/vm/src/builtins/type.rs
index e2e69c7bffc..b6995d6f595 100644
--- a/crates/vm/src/builtins/type.rs
+++ b/crates/vm/src/builtins/type.rs
@@ -439,7 +439,10 @@ impl PyType {
                 slot_name_set.insert(name);
             }
         }
-        for attr_name in slot_name_set {
+        // Sort for deterministic iteration order (important for slot processing)
+        let mut slot_names: Vec<_> = slot_name_set.into_iter().collect();
+        slot_names.sort_by_key(|name| name.as_str());
+        for attr_name in slot_names {
             self.update_slot::<true>(attr_name, ctx);
         }
 
diff --git a/crates/vm/src/stdlib/collections.rs b/crates/vm/src/stdlib/collections.rs
index 86caef7a25f..fd48cea0598 100644
--- a/crates/vm/src/stdlib/collections.rs
+++ b/crates/vm/src/stdlib/collections.rs
@@ -278,7 +278,6 @@ mod _collections {
             self.maxlen
         }
 
-        #[pymethod]
         fn __getitem__(&self, idx: isize, vm: &VirtualMachine) -> PyResult {
             let deque = self.borrow_deque();
             idx.wrapped_at(deque.len())
@@ -286,7 +285,6 @@ mod _collections {
                 .ok_or_else(|| vm.new_index_error("deque index out of range"))
         }
 
-        #[pymethod]
         fn __setitem__(&self, idx: isize, value: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
             let mut deque = self.borrow_deque_mut();
             idx.wrapped_at(deque.len())
@@ -295,7 +293,6 @@ mod _collections {
                 .ok_or_else(|| vm.new_index_error("deque index out of range"))
         }
 
-        #[pymethod]
         fn __delitem__(&self, idx: isize, vm: &VirtualMachine) -> PyResult<()> {
             let mut deque = self.borrow_deque_mut();
             idx.wrapped_at(deque.len())
diff --git a/crates/vm/src/stdlib/ctypes/array.rs b/crates/vm/src/stdlib/ctypes/array.rs
index d808f967a0f..eea1fd765d5 100644
--- a/crates/vm/src/stdlib/ctypes/array.rs
+++ b/crates/vm/src/stdlib/ctypes/array.rs
@@ -940,7 +940,6 @@ impl PyCArray {
     }
 
     // Array_subscript
-    #[pymethod]
     fn __getitem__(zelf: &Py<Self>, item: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         // PyIndex_Check
         if let Some(i) = item.downcast_ref::<PyInt>() {
@@ -1047,7 +1046,6 @@ impl PyCArray {
     }
 
     // Array_ass_subscript
-    #[pymethod]
     fn __setitem__(
         zelf: &Py<Self>,
         item: PyObjectRef,
@@ -1074,7 +1072,6 @@ impl PyCArray {
     }
 
     // Array does not support item deletion
-    #[pymethod]
     fn __delitem__(&self, _item: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
         Err(vm.new_type_error("Array does not support item deletion"))
     }
diff --git a/crates/vm/src/stdlib/ctypes/pointer.rs b/crates/vm/src/stdlib/ctypes/pointer.rs
index 8a0f7cb0f6a..875d78a0010 100644
--- a/crates/vm/src/stdlib/ctypes/pointer.rs
+++ b/crates/vm/src/stdlib/ctypes/pointer.rs
@@ -346,7 +346,6 @@ impl PyCPointer {
     }
 
     // Pointer_subscript
-    #[pymethod]
     fn __getitem__(zelf: &Py<Self>, item: PyObjectRef, vm: &VirtualMachine) -> PyResult {
         // PyIndex_Check
         if let Some(i) = item.downcast_ref::<PyInt>() {
@@ -529,7 +528,6 @@ impl PyCPointer {
     }
 
     // Pointer_ass_item
-    #[pymethod]
     fn __setitem__(
         zelf: &Py<Self>,
         item: PyObjectRef,
diff --git a/crates/vm/src/stdlib/sre.rs b/crates/vm/src/stdlib/sre.rs
index b950db9e1ff..33f884e1adc 100644
--- a/crates/vm/src/stdlib/sre.rs
+++ b/crates/vm/src/stdlib/sre.rs
@@ -737,7 +737,6 @@ mod _sre {
             })
         }
 
-        #[pymethod]
         fn __getitem__(
             &self,
             group: PyObjectRef,