replace a list with dirs with new content

diff --git a/babel/messages/extract.py b/babel/messages/extract.py
index 84b758b493576990e1f1cc5c591966985422a105..22c44cbc033d079786df19f27abb1a5e74cafac1 100644 (file)
--- a/babel/messages/extract.py
+++ b/babel/messages/extract.py
@@ -135,7 +135,7 @@ def extract_from_dir(dirname=None, method_map=DEFAULT_MAPPING,
 
     absname = os.path.abspath(dirname)
     for root, dirnames, filenames in os.walk(absname):
-        dirnames = filter_dirs(dirnames)
+        dirnames[:] = filter_dirs(dirnames)
         dirnames.sort()
         filenames.sort()