From 0491a8e7c83dcbf8a293305681b498d38514541f Mon Sep 17 00:00:00 2001
From: Matthew Honnibal <honnibal+gh@gmail.com>
Date: Thu, 11 Jul 2019 11:49:36 +0200
Subject: [PATCH] Reformat

---
 spacy/tokens/_serialize.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/spacy/tokens/_serialize.py b/spacy/tokens/_serialize.py
index 57bc98f4b..41f524839 100644
--- a/spacy/tokens/_serialize.py
+++ b/spacy/tokens/_serialize.py
@@ -116,7 +116,7 @@ def merge_boxes(boxes):
     if merged is not None:
         return merged.to_bytes()
     else:
-        return b''
+        return b""
 
 
 def pickle_box(box):