From c049fca0da0b81b04060d52443af493afa560ee8 Mon Sep 17 00:00:00 2001
From: Florent Xicluna <florent.xicluna@gmail.com>
Date: Sat, 31 Jul 2010 08:56:55 +0000
Subject: [PATCH] Fix an oversight in r83294.  unquote() should reject bytes. 
 Issue #9301.

---
 Lib/test/test_urllib.py | 1 +
 Lib/urllib/parse.py     | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Lib/test/test_urllib.py b/Lib/test/test_urllib.py
index c68fe54b939..cea153e907a 100644
--- a/Lib/test/test_urllib.py
+++ b/Lib/test/test_urllib.py
@@ -557,6 +557,7 @@ class UnquotingTests(unittest.TestCase):
                          "%s" % result)
         self.assertRaises((TypeError, AttributeError), urllib.parse.unquote, None)
         self.assertRaises((TypeError, AttributeError), urllib.parse.unquote, ())
+        self.assertRaises((TypeError, AttributeError), urllib.parse.unquote, b'')
 
     def test_unquoting_badpercent(self):
         # Test unquoting on bad percent-escapes
diff --git a/Lib/urllib/parse.py b/Lib/urllib/parse.py
index a9fa26ad8f6..133b9d99b60 100644
--- a/Lib/urllib/parse.py
+++ b/Lib/urllib/parse.py
@@ -338,7 +338,7 @@ def unquote(string, encoding='utf-8', errors='replace'):
 
     unquote('abc%20def') -> 'abc def'.
     """
-    if string in (b'', ''):
+    if string == '':
         return string
     res = string.split('%')
     if len(res) == 1: