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-rw-r--r--sphinx/setup_command.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/sphinx/setup_command.py b/sphinx/setup_command.py
index de769e64d..76e69efed 100644
--- a/sphinx/setup_command.py
+++ b/sphinx/setup_command.py
@@ -114,7 +114,7 @@ class BuildDoc(Command):
for guess in ('doc', 'docs'):
if not os.path.isdir(guess):
continue
- for root, dirnames, filenames in os.walk(guess):
+ for root, _dirnames, filenames in os.walk(guess):
if 'conf.py' in filenames:
return root
return os.curdir