huge cleanup for removing mutables used as default

[sfa.git] / sfa / rspecs / elements / versions / ofeliav1Port.py

diff --git a/sfa/rspecs/elements/versions/ofeliav1Port.py b/sfa/rspecs/elements/versions/ofeliav1Port.py
index 07520ef..f4cf74d 100644 (file)
--- a/sfa/rspecs/elements/versions/ofeliav1Port.py
+++ b/sfa/rspecs/elements/versions/ofeliav1Port.py
@@ -39,7 +39,8 @@ class Ofeliav1Port:
         return attribs 
                 
     @staticmethod
-    def get_ports(xml, filter={}):
+    def get_ports(xml, filter=None):
+        if filter is None: filter={}
         xpath = './openflow:port | ./port'
         port_elems = xml.xpath(xpath)
         ports = []