From 44bc9406756c3e3d95e477ef3bfad2a5bc177a33 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Juhani=20Krekel=C3=A4?= <juhani.haverinen@gmail.com>
Date: Sat, 1 Sep 2018 21:43:35 +0300
Subject: [PATCH] Chain throws

---
 src/main-export-known-hosts.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/main-export-known-hosts.py b/src/main-export-known-hosts.py
index 63288b9..6cda64c 100644
--- a/src/main-export-known-hosts.py
+++ b/src/main-export-known-hosts.py
@@ -48,8 +48,8 @@ def main():
 
 	try:
 		homedir = os.environ['HOME']
-	except KeyError:
-		raise KeyError('$HOME is not set')
+	except KeyError as err:
+		raise KeyError('$HOME is not set') from err
 
 	# The input file
 	# Default to ~/.ssh/known_hosts