Modernize vnpy/rpc to get ready for Python 3

vnpy/rpc/testClient.py

@@ -1,5 +1,6 @@
 # encoding: UTF-8
 
+from __future__ import print_function
 from time import sleep
 
 from vnrpc import RpcClient
@@ -17,7 +18,7 @@ class TestClient(RpcClient):
     #----------------------------------------------------------------------
     def callback(self, topic, data):
         """回调函数实现"""
-        print 'client received topic:', topic, ', data:', data
+        print('client received topic:', topic, ', data:', data)
 
 
 if __name__ == '__main__':
@@ -29,5 +30,5 @@ if __name__ == '__main__':
     tc.start()
 
     while 1:
-        print tc.add(1, 3)
+        print(tc.add(1, 3))
         sleep(2)

vnpy/rpc/testServer.py

@@ -1,5 +1,6 @@
 # encoding: UTF-8
 
+from __future__ import print_function
 from time import sleep, time
 
 from vnrpc import RpcServer
@@ -19,7 +20,7 @@ class TestServer(RpcServer):
     #----------------------------------------------------------------------
     def add(self, a, b):
         """测试函数"""
-        print 'receiving: %s, %s' % (a,b)
+        print('receiving: %s, %s' % (a,b))
         return a + b
 
 
@@ -32,6 +33,6 @@ if __name__ == '__main__':
 
     while 1:
         content = 'current server time is %s' % time()
-        print content
+        print(content)
         ts.publish('test', content)
         sleep(2)

vnpy/rpc/vnrpc.py

@@ -313,5 +313,3 @@ class RemoteException(Exception):
     def __str__(self):
         """输出错误信息"""
         return self.__value
-
-