From 3b9c6677f883659c780b4b5099e1ea42c7b87642 Mon Sep 17 00:00:00 2001
From: Guido van Rossum <guido@python.org>
Date: Tue, 30 Jul 1996 18:40:29 +0000
Subject: [PATCH] Better error message if stride used on normal sequence object

---
 Python/ceval.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/Python/ceval.c b/Python/ceval.c
index d526095161..36e9b8c8eb 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -2529,6 +2529,9 @@ call_function(func, arg, kw)
 	return result;
 }
 
+#define SLICE_ERROR_MSG \
+	"standard sequence type does not support step size other than one"
+
 static object *
 apply_subscript(v, w)
 	object *v, *w;
@@ -2543,8 +2546,13 @@ apply_subscript(v, w)
 	}
 	else {
 		int i;
-		if (!is_intobject(w)) {
-			err_setstr(TypeError, "sequence subscript not int");
+		if (!is_intobject(w)) {		  
+			if (PySlice_Check(w)) {
+			        err_setstr(ValueError, SLICE_ERROR_MSG); 
+			} else {
+				err_setstr(TypeError,
+					   "sequence subscript not int");
+			}	
 			return NULL;
 		}
 		i = getintvalue(w);
-- 
2.50.1