pre-commit-hooks: python3.6+
diff --git a/pre_commit_hooks/forbid_new_submodules.py b/pre_commit_hooks/forbid_new_submodules.py
index bdbd6f7..c144d72 100644
--- a/pre_commit_hooks/forbid_new_submodules.py
+++ b/pre_commit_hooks/forbid_new_submodules.py
@@ -1,14 +1,10 @@
-from __future__ import absolute_import
-from __future__ import print_function
-from __future__ import unicode_literals
-
from typing import Optional
from typing import Sequence
from pre_commit_hooks.util import cmd_output
-def main(argv=None): # type: (Optional[Sequence[str]]) -> int
+def main(argv: Optional[Sequence[str]] = None) -> int:
# `argv` is ignored, pre-commit will send us a list of files that we
# don't care about
added_diff = cmd_output(
@@ -19,7 +15,7 @@
metadata, filename = line.split('\t', 1)
new_mode = metadata.split(' ')[1]
if new_mode == '160000':
- print('{}: new submodule introduced'.format(filename))
+ print(f'{filename}: new submodule introduced')
retv = 1
if retv:
