X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=sfa%2Frspecs%2Fversions%2Fsfav1.py;fp=sfa%2Frspecs%2Fversions%2Fsfav1.py;h=6e973e7e1b514077f3f4489c378ce21f080b1b7f;hb=d59f8e0b663b71d8c349017d0ecb37cb6bc527a1;hp=4ee8a4c874920cab6731b2f2a8bc886acd99232d;hpb=3159d2c474d80bf0fb52040a0105a44f49314436;p=sfa.git

diff --git a/sfa/rspecs/versions/sfav1.py b/sfa/rspecs/versions/sfav1.py
index 4ee8a4c8..6e973e7e 100644
--- a/sfa/rspecs/versions/sfav1.py
+++ b/sfa/rspecs/versions/sfav1.py
@@ -59,7 +59,8 @@ class SFAv1(RSpecVersion):
 
     # Slivers
    
-    def add_slivers(self, hostnames, attributes=[], sliver_urn=None, append=False):
+    def add_slivers(self, hostnames, attributes=None, sliver_urn=None, append=False):
+        if attributes is None: attributes=[]
         # add slice name to network tag
         network_tags = self.xml.xpath('//network')
         if network_tags: