From fd3a0f6d868534bd1dc9ab8d5e16c0b91f402c35 Mon Sep 17 00:00:00 2001
From: yyun-d <yeo1998@naver.com>
Date: Sat, 20 Nov 2021 18:59:18 +0900
Subject: [PATCH 1/2] implement reduce method to PySlice

Signed-off-by: yyun-d <yeo1998@naver.com>
---
 vm/src/builtins/slice.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/vm/src/builtins/slice.rs b/vm/src/builtins/slice.rs
index 99bcec732..68e5d6886 100644
--- a/vm/src/builtins/slice.rs
+++ b/vm/src/builtins/slice.rs
@@ -194,6 +194,20 @@ impl PySlice {
         let (start, stop, step) = self.inner_indices(length, vm)?;
         Ok(vm.new_tuple((start, stop, step)))
     }
+
+    #[allow(clippy::type_complexity)]
+    #[pymethod(magic)]
+    fn reduce(
+        zelf: PyRef<Self>,
+    ) -> PyResult<(
+        PyTypeRef,
+        (Option<PyObjectRef>, PyObjectRef, Option<PyObjectRef>),
+    )> {
+        Ok((
+            zelf.clone_class(),
+            (zelf.start.clone(), zelf.stop.clone(), zelf.step.clone()),
+        ))
+    }
 }
 
 impl Comparable for PySlice {

From e49d7118b863994393f3c58bb90475220d3cae19 Mon Sep 17 00:00:00 2001
From: yyun-d <yeo1998@naver.com>
Date: Sat, 20 Nov 2021 18:59:59 +0900
Subject: [PATCH 2/2] fix test_pickle in test_slice

Signed-off-by: yyun-d <yeo1998@naver.com>
---
 Lib/test/test_slice.py | 2 --
 1 file changed, 2 deletions(-)

diff --git a/Lib/test/test_slice.py b/Lib/test/test_slice.py
index ecdd92b6c..9e79775ac 100644
--- a/Lib/test/test_slice.py
+++ b/Lib/test/test_slice.py
@@ -234,8 +234,6 @@ class SliceTest(unittest.TestCase):
         x[1:2] = 42
         self.assertEqual(tmp, [(slice(1, 2), 42)])
 
-    # TODO: RUSTPYTHON
-    @unittest.expectedFailure
     def test_pickle(self):
         s = slice(10, 20, 3)
         for protocol in (0,1,2):