From 65d5e0d2248a27f32a386f48cf86fa3b80888629 Mon Sep 17 00:00:00 2001
From: Pierre Glaser <pierreglaser@msn.com>
Date: Tue, 23 Apr 2019 15:03:47 +0200
Subject: [PATCH 1/3] FIX pass __kwdefaults__ to state in python3

---
 cloudpickle/cloudpickle.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cloudpickle/cloudpickle.py b/cloudpickle/cloudpickle.py
index b5f414ac2..7df5f6c74 100644
--- a/cloudpickle/cloudpickle.py
+++ b/cloudpickle/cloudpickle.py
@@ -591,6 +591,8 @@ def save_function_tuple(self, func):
             state['annotations'] = func.__annotations__
         if hasattr(func, '__qualname__'):
             state['qualname'] = func.__qualname__
+        if hasattr(func, '__kwdefaults__'):
+            state['kwdefaults'] = func.__kwdefaults__
         save(state)
         write(pickle.TUPLE)
         write(pickle.REDUCE)  # applies _fill_function on the tuple
@@ -1075,6 +1077,8 @@ def _fill_function(*args):
         func.__module__ = state['module']
     if 'qualname' in state:
         func.__qualname__ = state['qualname']
+    if 'kwdefaults' in state:
+        func.__kwdefaults__ = state['kwdefaults']
 
     cells = func.__closure__
     if cells is not None:

From e792b2a89d1be2df206577615f09002917ae8400 Mon Sep 17 00:00:00 2001
From: Pierre Glaser <pierreglaser@msn.com>
Date: Tue, 23 Apr 2019 15:04:05 +0200
Subject: [PATCH 2/3] TST test roundtripping a function with kwonly args

---
 tests/cloudpickle_test.py | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/tests/cloudpickle_test.py b/tests/cloudpickle_test.py
index caa222ed3..e5afc3dd6 100644
--- a/tests/cloudpickle_test.py
+++ b/tests/cloudpickle_test.py
@@ -1392,6 +1392,28 @@ def g():
             cloned_func = pickle_depickle(func, protocol=self.protocol)
             assert cloned_func() == "hello from a {}!".format(source)
 
+    @pytest.mark.skipif(sys.version_info[0] < 3,
+                        reason="keyword only arguments were introduced in "
+                               "python 3")
+    def test_interactively_defined_func_with_keyword_only_argument(self):
+        # fixes https://github.com/cloudpipe/cloudpickle/issues/263
+        # The source code of this test is bundled in a string and is ran from
+        # the __main__ module of a subprocess in order to avoid a SyntaxError
+        # in python2 when pytest imports this file, as the keyword-only syntax
+        # is python3-only.
+        code = """
+        from cloudpickle import loads, dumps
+
+        def f(a, *, b=1):
+            return a + b
+
+        depickled_f = loads(dumps(f, protocol={protocol}))
+
+        for func in (f, depickled_f):
+            assert func(2) == 3
+            assert func.__kwdefaults__ == {{'b': 1}}
+        """.format(protocol=self.protocol)
+        assert_run_python_script(textwrap.dedent(code))
 
 class Protocol2CloudPickleTest(CloudPickleTest):
 

From c41b94fb34820e42b6e6b284a5c94f6feffebf86 Mon Sep 17 00:00:00 2001
From: Pierre Glaser <pierreglaser@msn.com>
Date: Tue, 23 Apr 2019 16:01:54 +0200
Subject: [PATCH 3/3] MNT changelog

---
 CHANGES.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CHANGES.md b/CHANGES.md
index 9658a676b..a09f105b3 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,10 @@
+0.9.0
+=====
+
+- Fix a bug making functions with keyword-only arguments forget the default
+  values of these arguments after being pickled.
+  ([issue #264](https://github.com/cloudpipe/cloudpickle/pull/264))
+
 0.8.1
 =====