[pypy-commit] pypy default: Simplify this code and make it faster

[alex_gaynor]

Author: Alex Gaynor <alex.gaynor at gmail.com>
Branch: 
Changeset: r66442:b0810369a3a8
Date: 2013-08-29 18:36 -0700
http://bitbucket.org/pypy/pypy/changeset/b0810369a3a8/

Log:	Simplify this code and make it faster

diff --git a/lib-python/2.7/uuid.py b/lib-python/2.7/uuid.py
--- a/lib-python/2.7/uuid.py
+++ b/lib-python/2.7/uuid.py
@@ -44,6 +44,8 @@
     UUID('00010203-0405-0607-0809-0a0b0c0d0e0f')
 """
 
+import struct
+
 __author__ = 'Ka-Ping Yee <ping at zesty.ca>'
 
 RESERVED_NCS, RFC_4122, RESERVED_MICROSOFT, RESERVED_FUTURE = [
@@ -142,7 +144,8 @@
         if bytes is not None:
             if len(bytes) != 16:
                 raise ValueError('bytes is not a 16-char string')
-            int = long(('%02x'*16) % tuple(map(ord, bytes)), 16)
+            int = (struct.unpack('>Q', bytes[:8])[0] << 64 |
+                   struct.unpack('>Q', bytes[8:])[0])
         if fields is not None:
             if len(fields) != 6:
                 raise ValueError('fields is not a 6-tuple')