Add __nonzero__ method to ParsingDict so that keys() isn't called if …

…you evaluate its truthiness
RIPE-NCC · Feb 12, 2016 · 6762e5c · 6762e5c
1 parent 67c00be
commit 6762e5c
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/ripe/atlas/sagan/base.py b/ripe/atlas/sagan/base.py
@@ -89,6 +89,11 @@ def __init__(self, **kwargs):
         self._on_malformation = kwargs.pop("on_malformation", self.ACTION_WARN)
         self.is_malformed = False
 
+    def __nonzero__(self):
+        # If we don't define this, Python ends up calling keys()
+        # via __len__()  whenever we evaluate the object as a bool.
+        return True
+
     def __len__(self):
         return len(self.keys())