From 9fb8a7b0ba8d1cd9dc46ecaaf984883b8ab047ef Mon Sep 17 00:00:00 2001
From: Josh Peak <neozenith.dev@gmail.com>
Date: Tue, 2 Jul 2019 16:12:52 +1000
Subject: [PATCH] Add guard statement for empty Cassette when returning best
 match

fix white space flake 8 issue
---
 vcr/cassette.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/vcr/cassette.py b/vcr/cassette.py
index bbed20e..742014b 100644
--- a/vcr/cassette.py
+++ b/vcr/cassette.py
@@ -311,7 +311,11 @@ class Cassette(object):
         best_matches.sort(key=lambda t: t[0], reverse=True)
         # Get the first best matches (multiple if equal matches)
         final_best_matches = []
-        previous_nb_success = 0 
+
+        if not best_matches:
+            return final_best_matches
+
+        previous_nb_success = best_matches[0][0]
         for best_match in best_matches:
             nb_success = best_match[0]
             # Do not keep matches that have 0 successes,