Don't use local function

Author: kou

python/pyarrow/tests/test_serialization.py

@@ -932,7 +932,10 @@ def test_serialize_read_concatenated_records():
     pa.read_serialized(f).deserialize()
 
 
-@pytest.mark.skipif(os.name == 'nt', reason="deserialize_regex not pickleable")
+def deserialize_regex(serialized, q):
+    import pyarrow as pa
+    q.put(pa.deserialize(serialized))
+
 def test_deserialize_in_different_process():
     from multiprocessing import Process, Queue
     import re
@@ -945,10 +948,6 @@ def test_deserialize_in_different_process():
     serialized = pa.serialize(regex, serialization_context)
     serialized_bytes = serialized.to_buffer().to_pybytes()
 
-    def deserialize_regex(serialized, q):
-        import pyarrow as pa
-        q.put(pa.deserialize(serialized))
-
     q = Queue()
     p = Process(target=deserialize_regex, args=(serialized_bytes, q))
     p.start()