Merge pull request #560 from eqcorrscan/party-init

Force Party instantiation to be made from Families

eqcorrscan/core/match_filter/party.py

@@ -53,6 +53,10 @@ def __init__(self, families=None):
         if isinstance(families, Family):
             families = [families]
         if families:
+            assert isinstance(families, list), \
+                "Families must be list of Family objects"
+            assert all(isinstance(f, Family) for f in families), \
+                "Families must be list of Family objects"
             self.families.extend(families)
 
     def __repr__(self):