python-cloud
diff --git a/‎test55.py‎
Lines changed: 52 additions & 0 deletions b/‎test55.py‎
Lines changed: 52 additions & 0 deletions
@@ -0,0 +1,52 @@
+#!/usr.bin.env python 3
+# -*- coding: utf-8 -*-
+
+'''
+练习python的async/await
+async:相当于asyncio.coroutine,可以用这个替换这个更加方便
+await:相当于yield form，把这个改成await即可替代
+以上都是在python3.5版本以上才有的
+'''
+
+__author__ = 'sergiojune'
+import asyncio
+
+
+async def hello():  # 这样就是相当于一个coroutine了
+    print('hello world')
+    await asyncio.sleep(1)
+    print('hello again')
+
+
+# loop = asyncio.get_event_loop()
+# loop.run_until_complete(hello())
+# loop.close()
+
+
+# 两个协程
+# loop = asyncio.get_event_loop()
+# loop.run_until_complete(asyncio.wait([hello(), hello()]))
+# loop.close()
+
+
+# 再用这个方法连接搜狐新浪和网易
+async def wegt(host):
+    print('wegt %s ' % host)
+    # 连接
+    connect = asyncio.open_connection(host, 80)
+    reader, writer = await connect
+    header = 'GET/HTTP/1.0\r\nHost:%s\r\n\r\n' % host
+    writer.write(header.encode('utf-8'))
+    await writer.drain()  # 相当于刷新缓存
+    while True:
+        line = await reader.readline()
+        if line == b'\r\n':
+            print()
+            break
+        print('%s header > %s' % (host, line.decode('utf-8').strip()))
+    connect.close()
+
+
+loop = asyncio.get_event_loop()
+loop.run_until_complete(asyncio.wait([wegt(host) for host in ['www.sina.com.cn', 'www.sohu.com', 'www.163.com']]))
+loop.close()