From 067f146b42fc28aeffff567e841e0cb98817fee7 Mon Sep 17 00:00:00 2001
From: wouter bolsterlee <wouter@bolsterl.ee>
Date: Wed, 19 Jul 2017 17:28:43 +0200
Subject: [PATCH] define uuid.UUID.__slots__ to save memory

---
 Lib/uuid.py | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/Lib/uuid.py b/Lib/uuid.py
index d4259ae0b3bd67..dfac31112aec9b 100644
--- a/Lib/uuid.py
+++ b/Lib/uuid.py
@@ -117,6 +117,8 @@ class UUID:
                     uuid_generate_time_safe(3).
     """
 
+    __slots__ = ('int', 'is_safe')
+
     def __init__(self, hex=None, bytes=None, bytes_le=None, fields=None,
                        int=None, version=None,
                        *, is_safe=SafeUUID.unknown):
@@ -200,8 +202,8 @@ def __init__(self, hex=None, bytes=None, bytes_le=None, fields=None,
             # Set the version number.
             int &= ~(0xf000 << 64)
             int |= version << 76
-        self.__dict__['int'] = int
-        self.__dict__['is_safe'] = is_safe
+        super().__setattr__('int', int)
+        super().__setattr__('is_safe', is_safe)
 
     def __eq__(self, other):
         if isinstance(other, UUID):