From 8130f7c3c4a5fa8458bd1dd7ee40229ee687952e Mon Sep 17 00:00:00 2001
From: Alexandre Vassalotti <alexandre@peadrop.com>
Date: Thu, 8 May 2008 01:39:38 +0000
Subject: [PATCH] Fixed the negative value check in io._BytesIO.seek().

---
 Lib/io.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/io.py b/Lib/io.py
index 940c4c776c8..d85ed49d150 100644
--- a/Lib/io.py
+++ b/Lib/io.py
@@ -831,9 +831,9 @@ class _BytesIO(BufferedIOBase):
         except AttributeError as err:
             raise TypeError("an integer is required") from err
         if whence == 0:
-            self._pos = max(0, pos)
             if pos < 0:
                 raise ValueError("negative seek position %r" % (pos,))
+            self._pos = max(0, pos)
         elif whence == 1:
             self._pos = max(0, self._pos + pos)
         elif whence == 2: