diff --git a/lib/searpc-codegen.py b/lib/searpc-codegen.py
index 452c55a..a2711a8 100644
--- a/lib/searpc-codegen.py
+++ b/lib/searpc-codegen.py
@@ -1,4 +1,9 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python
+
+from __future__ import absolute_import
+from __future__ import division
+from __future__ import print_function
+from __future__ import unicode_literals
 
 """
 Generate function define macros.
@@ -103,7 +108,7 @@ def generate_marshal(ret_type, arg_types):
 def gen_marshal_functions(f):
     from rpc_table import func_table
     for item in func_table:
-        print >>f, generate_marshal(item[0], item[1])
+        print(generate_marshal(item[0], item[1]), file=f)
 
 
 marshal_register_item = r"""
@@ -130,11 +135,11 @@ def generate_marshal_register_item(ret_type, arg_types):
 
 def gen_marshal_register_function(f):
     from rpc_table import func_table
-    print >>f, "static void register_marshals()"""
-    print >>f, "{"
+    print("static void register_marshals()""", file=f)
+    print("{", file=f)
     for item in func_table:
-        print >>f, generate_marshal_register_item(item[0], item[1]),
-    print >>f, "}"
+        print(generate_marshal_register_item(item[0], item[1]), end=' ', file=f)
+    print("}", file=f)
 
 signature_template = r"""
 inline static gchar *
@@ -164,7 +169,7 @@ def generate_signature(ret_type, arg_types):
 def gen_signature_list():
     f = open('searpc-signature.h', 'w')
     for item in func_table:
-        print >>f,generate_signature(item[0], item[1])
+        print(generate_signature(item[0], item[1]), file=f)
     f.close()
 
 
@@ -178,8 +183,8 @@ def gen_signature_list():
         f = os.path.basename(abspath)
         mod = f[:f.rfind('.')]
         sys.path.append(d)
-        rpc_mod = __import__(mod, globals(), locals(), [], -1)
-        print "loaded func_table from %s" % (rpc_mod.__file__)
+        rpc_mod = __import__(mod, globals(), locals(), [], 0)
+        print("loaded func_table from %s" % (rpc_mod.__file__))
         func_table = rpc_mod.func_table
     else:
         # load from default rpc_table.py
diff --git a/pysearpc/server.py b/pysearpc/server.py
index 070c17e..94d9bac 100644
--- a/pysearpc/server.py
+++ b/pysearpc/server.py
@@ -1,6 +1,6 @@
 import json
 
-from common import SearpcError
+from .common import SearpcError
 
 class SearpcService(object):
     def __init__(self, name):
@@ -25,7 +25,7 @@ def _call_function(self, svcname, fcallstr):
         """input str -> output str"""
         try:
             argv = json.loads(fcallstr)
-        except Exception, e:
+        except Exception as e:
             raise SearpcError('bad call str: ' + str(e))
 
         service = self.services[svcname]
@@ -41,7 +41,7 @@ def _call_function(self, svcname, fcallstr):
     def call_function(self, svcname, fcallstr):
         try:
             retVal = self._call_function(svcname, fcallstr)
-        except Exception, e:
+        except Exception as e:
             ret = {'err_code': 555, 'err_msg': str(e)}
         else:
             ret = {'ret': retVal}