From 568a4c9b5ded2f40a8901b6fe4cd828d14c0799c Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Fri, 29 Jun 2018 13:49:08 +0530
Subject: [PATCH] Re-raise KeyError idiomatically

---
 kitty/conf/utils.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/kitty/conf/utils.py b/kitty/conf/utils.py
index 0fdbaf31b..63cce13d5 100644
--- a/kitty/conf/utils.py
+++ b/kitty/conf/utils.py
@@ -236,11 +236,11 @@ def parse_kittens_func_args(action, args_funcs):
 
     try:
         parser = args_funcs[func]
-    except KeyError:
+    except KeyError as e:
         raise KeyError(
-            "Couldn't get valid key from {}. Check if input action: "
-            "{} is valid".format(parts, action)
-        )
+            'Unknown action: {}. Check if map action: '
+            '{} is valid'.format(func, action)
+        ) from e
 
     try:
         func, args = parser(func, rest)