From 7564833b6e3769041db391725d754d13a2a2da8a Mon Sep 17 00:00:00 2001
From: Jeong YunWon <jeong@youknowone.org>
Date: Sat, 11 May 2019 05:17:29 +0900
Subject: [PATCH] Add classmethod.__func__

---
 tests/snippets/class.py      | 3 +++
 vm/src/obj/objclassmethod.rs | 5 +++++
 2 files changed, 8 insertions(+)

diff --git a/tests/snippets/class.py b/tests/snippets/class.py
index ded02dbfa..389c22712 100644
--- a/tests/snippets/class.py
+++ b/tests/snippets/class.py
@@ -152,3 +152,6 @@ class T4:
 
 assert T4.__doc__ == "test4"
 assert T4.t1.__doc__ == "t1"
+
+cm = classmethod(lambda cls: cls)
+assert cm.__func__(int) is int
diff --git a/vm/src/obj/objclassmethod.rs b/vm/src/obj/objclassmethod.rs
index 69d6dba4e..10b3106ec 100644
--- a/vm/src/obj/objclassmethod.rs
+++ b/vm/src/obj/objclassmethod.rs
@@ -57,6 +57,11 @@ impl PyClassMethod {
             .ctx
             .new_bound_method(self.callable.clone(), owner.clone()))
     }
+
+    #[pyproperty(name = "__func__")]
+    fn func(&self, _vm: &VirtualMachine) -> PyObjectRef {
+        self.callable.clone()
+    }
 }
 
 pub fn init(context: &PyContext) {