From 037b286eb81dba0b6604dc06f70c07670cc3156f Mon Sep 17 00:00:00 2001
From: Aidan Timson <contact@timmo.xyz>
Date: Wed, 4 May 2022 12:40:50 +0100
Subject: [PATCH] Fix for running in pythonw

---
 sanic/mixins/runner.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sanic/mixins/runner.py b/sanic/mixins/runner.py
index 1df77e551e..30645b2b1d 100644
--- a/sanic/mixins/runner.py
+++ b/sanic/mixins/runner.py
@@ -424,7 +424,7 @@ def _helper(
 
         self.motd(self.serve_location)
 
-        if sys.stdout.isatty() and not self.state.is_debug:
+        if sys.stdout and sys.stdout.isatty() and not self.state.is_debug:
             error_logger.warning(
                 f"{Colors.YELLOW}Sanic is running in PRODUCTION mode. "
                 "Consider using '--debug' or '--dev' while actively "