add producer/consumer sample

Author: michaelliao

py3/advance/do_prod_cons.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+import time
+
+def consumer():
+    r = ''
+    while True:
+        n = yield r
+        if not n:
+            return
+        print('[CONSUMER] Consuming %s...' % n)
+        time.sleep(1)
+        r = '200 OK'
+
+def produce(c):
+    c.send(None)
+    n = 0
+    while n < 5:
+        n = n + 1
+        print('[PRODUCER] Producing %s...' % n)
+        r = c.send(n)
+        print('[PRODUCER] Consumer return: %s' % r)
+    c.close()
+
+c = consumer()
+produce(c)