From d91fd4e3cac4082e0020b73d5dc7236e779c1f30 Mon Sep 17 00:00:00 2001
From: Kartheek Gottipati <kartheekgottipati@gmail.com>
Date: Sun, 26 Mar 2023 21:16:46 -0400
Subject: [PATCH] Avoid using mutable default

---
 neptune-python-utils/neptune_python_utils/endpoints.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/neptune-python-utils/neptune_python_utils/endpoints.py b/neptune-python-utils/neptune_python_utils/endpoints.py
index cd97a587..efab8d29 100644
--- a/neptune-python-utils/neptune_python_utils/endpoints.py
+++ b/neptune-python-utils/neptune_python_utils/endpoints.py
@@ -135,8 +135,11 @@ def __proxied_neptune_endpoint_url(self):
             return '{}://{}:{}/{}'.format(self.protocol, self.neptune_endpoint, self.neptune_port, self.suffix)
         
         
-    def prepare_request(self, method='GET', payload=None, querystring={}, headers={}):
-        
+    def prepare_request(self, method='GET', payload=None, querystring=None, headers=None):
+
+        querystring = querystring or {}
+        headers = headers or {}
+
         def get_headers():
             
             service = 'neptune-db'