From 92822118e212aab37239bf7678399a7bde7f17fe Mon Sep 17 00:00:00 2001
From: George Hickman <george@ghickman.co.uk>
Date: Fri, 24 Nov 2023 16:13:26 +0000
Subject: [PATCH] Always initialise values with an empty list

---
 metrics/timescaledb/writer.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/metrics/timescaledb/writer.py b/metrics/timescaledb/writer.py
index 0a1aec5c..2c0b670d 100644
--- a/metrics/timescaledb/writer.py
+++ b/metrics/timescaledb/writer.py
@@ -31,14 +31,13 @@ def ensure_table(engine, table):
 
 
 class TimescaleDBWriter:
-    values = []
-
     def __init__(self, table, engine=None):
         if engine is None:
             engine = create_engine(TIMESCALEDB_URL)
 
         self.engine = engine
         self.table = table
+        self.values = []
 
     def __enter__(self):
         ensure_table(self.engine, self.table)