From aa9eb7ae6c7a8d479dfa40f4e913f814377b08a7 Mon Sep 17 00:00:00 2001
From: Daniel Lok <daniel.lok@databricks.com>
Date: Mon, 5 Feb 2024 12:06:31 +0800
Subject: [PATCH] fix: only pass .env to config if it exists

---
 slowapi/extension.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/slowapi/extension.py b/slowapi/extension.py
index ac14a06..541e18f 100644
--- a/slowapi/extension.py
+++ b/slowapi/extension.py
@@ -6,6 +6,7 @@ import functools
 import inspect
 import itertools
 import logging
+import os
 import time
 from datetime import datetime
 from email.utils import formatdate, parsedate_to_datetime
@@ -154,8 +155,9 @@ class Limiter:
 
         self.logger = logging.getLogger("slowapi")
 
+        dotenv_file_exists = os.path.isfile(".env")
         self.app_config = Config(
-            config_filename if config_filename is not None else ".env"
+            ".env" if dotenv_file_exists and config_filename is None else config_filename
         )
 
         self.enabled = enabled