From 47a825262244713bdb71ef08398a24c5fc56b283 Mon Sep 17 00:00:00 2001
From: Pierre LALET <pierre.lalet@cea.fr>
Date: Tue, 24 Oct 2017 11:19:06 +0200
Subject: [PATCH] Prevent useless list creations

---
 scapy/fields.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scapy/fields.py b/scapy/fields.py
index 002b74e0b..a5e69366d 100644
--- a/scapy/fields.py
+++ b/scapy/fields.py
@@ -18,6 +18,7 @@ from scapy.utils import *
 from scapy.base_classes import BasePacket, Gen, Net, Field_metaclass
 from scapy.error import warning
 import scapy.modules.six as six
+from scapy.modules.six.moves import range
 
 
 ############
@@ -919,7 +920,7 @@ class _EnumField(Field):
             if isinstance(enum, list):
                 keys = range(len(enum))
             elif isinstance(enum, DADict):
-                keys = enum.keys()
+                keys = enum.iterkeys()
             else:
                 keys = list(enum)
             if any(isinstance(x, str) for x in keys):