huge cleanup for removing mutables used as default

[sfa.git] / sfa / rspecs / elements / versions / sfav1Lease.py

diff --git a/sfa/rspecs/elements/versions/sfav1Lease.py b/sfa/rspecs/elements/versions/sfav1Lease.py
index 039d2d1..0c7cb26 100644 (file)
--- a/sfa/rspecs/elements/versions/sfav1Lease.py
+++ b/sfa/rspecs/elements/versions/sfav1Lease.py
@@ -72,7 +72,8 @@ class SFAv1Lease:
 
 
     @staticmethod
-    def get_leases(xml, filter={}):
+    def get_leases(xml, filter=None):
+        if filter is None: filter={}
         xpath = '//lease%s | //default:lease%s' % (XpathFilter.xpath(filter), XpathFilter.xpath(filter))
         lease_elems = xml.xpath(xpath)
         return SFAv1Lease.get_lease_objs(lease_elems)