From e0078a781ada92a16392f0b172e9160aa972866e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bendeg=C3=BAz=20=C3=81cs?=
 <30595431+acsbendi@users.noreply.github.com>
Date: Tue, 18 Jun 2019 15:27:07 +0200
Subject: [PATCH] Fixed random_suffix()

---
 moto/cloudformation/utils.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/moto/cloudformation/utils.py b/moto/cloudformation/utils.py
index de75d2c15..e4290ce1a 100644
--- a/moto/cloudformation/utils.py
+++ b/moto/cloudformation/utils.py
@@ -4,6 +4,7 @@ import six
 import random
 import yaml
 import os
+import string
 
 from cfnlint import decode, core
 
@@ -29,7 +30,7 @@ def generate_stackset_arn(stackset_id, region_name):
 
 def random_suffix():
     size = 12
-    chars = list(range(10)) + ['A-Z']
+    chars = list(range(10)) + list(string.ascii_uppercase)
     return ''.join(six.text_type(random.choice(chars)) for x in range(size))