From 8faa34b2ff09f3233eda82be9b138426777fbaea Mon Sep 17 00:00:00 2001
From: MMA <58857539+TheGeeKing@users.noreply.github.com>
Date: Tue, 15 Aug 2023 18:08:20 +0200
Subject: [PATCH] Fix set_key creates orphan .env file

Changed:
- `set_key` now checks if the `dotenv_path` exists

Fix https://github.com/theskumar/python-dotenv/issues/480
---
 src/dotenv/main.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/dotenv/main.py b/src/dotenv/main.py
index 383b79f4..90c07666 100644
--- a/src/dotenv/main.py
+++ b/src/dotenv/main.py
@@ -166,6 +166,10 @@ def set_key(
         or (quote_mode == "auto" and not value_to_set.isalnum())
     )
 
+    if not os.path.exists(dotenv_path):
+        logger.warning("Can't set key to %s - it doesn't exist.", dotenv_path)
+        return None, key_to_set, value_to_set
+
     if quote:
         value_out = "'{}'".format(value_to_set.replace("'", "\\'"))
     else: