skip uuid.txt creation when no files in the directory

1 files changed, 2 insertions, 0 deletions

diff --git a/scan.py b/scan.py
index cfae385..eb24db4 100755
--- a/scan.py
+++ b/scan.py
@@ -35,6 +35,8 @@ def main():
     db = []
     with open(DB_FILENAME + '.new', 'wb') as out:
         for root, dirs, files in os.walk(START_DIR):
+            if not len(files):
+                continue
             files, uuids = partition(lambda f: '/uuid.txt' in f,
                                     (os.path.join(root, f) for f in files))
             if len(uuids) == 1: