From 79b59e56f44f118b2703390493c1fb0a22cf7008 Mon Sep 17 00:00:00 2001 From: nvbn Date: Sun, 14 Dec 2014 20:17:04 +0300 Subject: [PATCH] collections.deque: Add support of __bool__(). To support `if deque_inst` and similar. --- collections.deque/collections/deque.py | 3 +++ 1 file changed, 3 insertions(+) diff --git a/collections.deque/collections/deque.py b/collections.deque/collections/deque.py index 70b6d98b..5371c48e 100644 --- a/collections.deque/collections/deque.py +++ b/collections.deque/collections/deque.py @@ -23,3 +23,6 @@ class deque: def __len__(self): return len(self.q) + + def __bool__(self): + return len(self) > 0