huge cleanup for removing mutables used as default

[sfa.git] / sfa / rspecs / elements / versions / pgv2DiskImage.py

diff --git a/sfa/rspecs/elements/versions/pgv2DiskImage.py b/sfa/rspecs/elements/versions/pgv2DiskImage.py
index 51363de..4a6df82 100644 (file)
--- a/sfa/rspecs/elements/versions/pgv2DiskImage.py
+++ b/sfa/rspecs/elements/versions/pgv2DiskImage.py
@@ -13,7 +13,8 @@ class PGv2DiskImage:
             xml.add_instance('disk_image', image, DiskImage.fields)
     
     @staticmethod
-    def get_images(xml, filter={}):
+    def get_images(xml, filter=None):
+        if filter is None: filter={}
         xpath = './default:disk_image | ./disk_image'
         image_elems = xml.xpath(xpath)
         images = []