From a03c5a9ee5ac7cd89bb9c1d8162da5969f3578d1 Mon Sep 17 00:00:00 2001
From: Michiel De Smet <michiel.desmet@starburstdata.com>
Date: Fri, 16 Sep 2022 13:30:27 +0200
Subject: [PATCH] Fix mutable constructor argument

---
 trino/client.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/trino/client.py b/trino/client.py
index ab8f3851..b973ff6b 100644
--- a/trino/client.py
+++ b/trino/client.py
@@ -930,8 +930,7 @@ class RowMapper:
     """
     Maps a row of data given a list of mapping functions
     """
-
-    def __init__(self, columns=[]):
+    def __init__(self, columns):
         self.columns = columns
 
     def map(self, rows):