From 5434da22bc3070682e6628657bce24f5a0e5b560 Mon Sep 17 00:00:00 2001
From: Bobloy <alboblexloy@gmail.com>
Date: Thu, 3 May 2018 11:45:12 -0400
Subject: [PATCH] better default

---
 chatter/chatterbot/storage/mongodb.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/chatter/chatterbot/storage/mongodb.py b/chatter/chatterbot/storage/mongodb.py
index 06ced53..1ddb625 100644
--- a/chatter/chatterbot/storage/mongodb.py
+++ b/chatter/chatterbot/storage/mongodb.py
@@ -3,8 +3,11 @@ from chatter.chatterbot.storage import StorageAdapter
 
 class Query(object):
 
-    def __init__(self, query={}):
-        self.query = query
+    def __init__(self, query=None):
+        if query is None:
+            self.query = {}
+        else:
+            self.query = query
 
     def value(self):
         return self.query.copy()