huge cleanup for removing mutables used as default

[sfa.git] / sfa / methods / List.py

diff --git a/sfa/methods/List.py b/sfa/methods/List.py
index d53a0a5..83d7a6e 100644 (file)
--- a/sfa/methods/List.py
+++ b/sfa/methods/List.py
@@ -25,7 +25,8 @@ class List(Method):
     # xxx used to be [SfaRecord]
     returns = [Parameter(dict, "registry record")]
     
-    def call(self, xrn, creds, options={}):
+    def call(self, xrn, creds, options=None):
+        if options is None: options={}
         hrn, type = urn_to_hrn(xrn)
         valid_creds = self.api.auth.checkCredentials(creds, 'list')