From 8989ea6ce1619890adc58778fb5516a36053cadb Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Sat, 1 Jun 2002 00:06:20 +0000
Subject: Use is None rather than general boolean

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

diff --git a/Lib/compileall.py b/Lib/compileall.py
index 8110fb9..2fbc2bc 100644
--- a/Lib/compileall.py
+++ b/Lib/compileall.py
@@ -44,11 +44,11 @@ def compile_dir(dir, maxlevels=10, ddir=None,
     success = 1
     for name in names:
         fullname = os.path.join(dir, name)
-        if ddir:
+        if ddir is not None:
             dfile = os.path.join(ddir, name)
         else:
             dfile = None
-        if rx:
+        if rx is not None:
             mo = rx.search(fullname)
             if mo:
                 continue
-- 
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