From 8e1479f6ba7aced81144e76ef7bfc7f87c2e111a Mon Sep 17 00:00:00 2001
From: Igor Chubin <igor@chub.in>
Date: Wed, 3 Oct 2018 19:43:53 +0200
Subject: [PATCH] User-Agent can be omited

---
 bin/srv.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/bin/srv.py b/bin/srv.py
index 4f30cca..a76e524 100644
--- a/bin/srv.py
+++ b/bin/srv.py
@@ -322,7 +322,7 @@ def send_malformed():
 @app.route("/<string:location>")
 def wttr(location = None):
 
-    user_agent = request.headers.get('User-Agent').lower()
+    user_agent = request.headers.get('User-Agent', '').lower()
 
     if any(agent in user_agent for agent in PLAIN_TEXT_AGENTS):
         html_output = False