vpp_papi: Adjust aenum import for python3.

The stdlib introduced IntEnum in python 3.4 and IntFlag in python 3.6.

Change-Id: I3ac278a9d5a97eefa9fc4f1491f0cd030e40c3b2
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>

2 files changed, 11 insertions, 4 deletions

diff --git a/src/vpp-api/python/setup.py b/src/vpp-api/python/setup.py
index b5fc11a590a..c8321320c73 100644
--- a/src/vpp-api/python/setup.py
+++ b/src/vpp-api/python/setup.py
@@ -13,7 +13,7 @@
 # limitations under the License.
 import sys
 
-stdlib_enum = sys.version_info >= (3, 4)
+stdlib_enum = sys.version_info >= (3, 6)
 
 try:
     from setuptools import setup, find_packages
diff --git a/src/vpp-api/python/vpp_papi/vpp_serializer.py b/src/vpp-api/python/vpp_papi/vpp_serializer.py
index e6012018f08..1e59e366a8f 100644
--- a/src/vpp-api/python/vpp_papi/vpp_serializer.py
+++ b/src/vpp-api/python/vpp_papi/vpp_serializer.py
@@ -16,10 +16,17 @@
 import struct
 import collections
 import sys
-if sys.version[0] == '2':
-    from aenum import IntEnum, IntFlag
+
+if sys.version_info <= (3, 4):
+    from aenum import IntEnum
 else:
-    from enum import IntEnum, IntFlag
+    from enum import IntEnum
+
+if sys.version_info <= (3, 6):
+    from aenum import IntFlag
+else:
+    from enum import IntFlag
+
 import logging
 from . import vpp_format
 import ipaddress