fix regular expression for test files
diff --git a/pre_commit_hooks/tests_should_end_in_test.py b/pre_commit_hooks/tests_should_end_in_test.py
index 7a1e7c0..d93595f 100644
--- a/pre_commit_hooks/tests_should_end_in_test.py
+++ b/pre_commit_hooks/tests_should_end_in_test.py
@@ -18,7 +18,7 @@
args = parser.parse_args(argv)
retcode = 0
- test_name_pattern = 'test.*.py' if args.django else '.*_test.py'
+ test_name_pattern = r'test.*\.py' if args.django else r'.*_test\.py'
for filename in args.filenames:
base = os.path.basename(filename)
if (