hermetically seal everything, bring it up to date

python/client.py

@@ -0,0 +1,17 @@
+from ray import ray
+
+ray.connect("localhost:50050")
+
+@ray.remote
+def plus2(x):
+    return x + 2
+
+print(ray.get(plus2.remote(4)))
+
+@ray.remote
+def fact(x):
+    if x <= 0:
+        return 1
+    return x * ray.get(fact.remote(x - 1))
+
+print(ray.get(fact.remote(20)))