huge cleanup for removing mutables used as default

[sfa.git] / sfa / storage / model.py

diff --git a/sfa/storage/model.py b/sfa/storage/model.py
index d50d3b6..7c74977 100644 (file)
--- a/sfa/storage/model.py
+++ b/sfa/storage/model.py
@@ -410,7 +410,8 @@ def drop_tables(engine):
 
 ##############################
 # create a record of the right type from either a dict or an xml string
-def make_record (dict={}, xml=""):
+def make_record (dict=None, xml=""):
+    if dict is None: dict={}
     if dict:    return make_record_dict (dict)
     elif xml:   return make_record_xml (xml)
     else:       raise Exception("make_record has no input")