[Streaming] Streaming data transfer and python integration (#6185)

streaming/python/tests/test_word_count.py

@@ -0,0 +1,20 @@
+import ray
+from ray.streaming.config import Config
+from ray.streaming.streaming import Environment, Conf
+
+
+def test_word_count():
+    ray.init()
+    env = Environment(config=Conf(channel_type=Config.NATIVE_CHANNEL))
+    env.read_text_file(__file__) \
+        .set_parallelism(1) \
+        .filter(lambda x: "word" in x) \
+        .inspect(lambda x: print("result", x))
+    env_handle = env.execute()
+    ray.get(env_handle)  # Stay alive until execution finishes
+    env.wait_finish()
+    ray.shutdown()
+
+
+if __name__ == "__main__":
+    test_word_count()