From 4d75a01798cf0ff112335804382bd4bf50f7bf78 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Mon, 29 Sep 2014 18:13:02 +0300
Subject: Issue #22510: Get rid of little overhead of testing re.DEBUG flag.

---
 Lib/re.py | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/Lib/re.py b/Lib/re.py
index 2a410c8..8f5b399 100644
--- a/Lib/re.py
+++ b/Lib/re.py
@@ -273,12 +273,10 @@ _pattern_type = type(sre_compile.compile("", 0))
 _MAXCACHE = 512
 def _compile(pattern, flags):
     # internal: compile pattern
-    bypass_cache = flags & DEBUG
-    if not bypass_cache:
-        try:
-            return _cache[type(pattern), pattern, flags]
-        except KeyError:
-            pass
+    try:
+        return _cache[type(pattern), pattern, flags]
+    except KeyError:
+        pass
     if isinstance(pattern, _pattern_type):
         if flags:
             raise ValueError(
@@ -287,7 +285,7 @@ def _compile(pattern, flags):
     if not sre_compile.isstring(pattern):
         raise TypeError("first argument must be string or compiled pattern")
     p = sre_compile.compile(pattern, flags)
-    if not bypass_cache:
+    if not (flags & DEBUG):
         if len(_cache) >= _MAXCACHE:
             _cache.clear()
         _cache[type(pattern), pattern, flags] = p
-- 
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