pre-commit-hooks: python3.6+

pre_commit_hooks/check_ast.py

@@ -1,7 +1,3 @@
-from __future__ import absolute_import
-from __future__ import print_function
-from __future__ import unicode_literals
-
 import argparse
 import ast
 import platform
@@ -11,7 +7,7 @@ from typing import Optional
 from typing import Sequence
 
 
-def main(argv=None):  # type: (Optional[Sequence[str]]) -> int
+def main(argv: Optional[Sequence[str]] = None) -> int:
     parser = argparse.ArgumentParser()
     parser.add_argument('filenames', nargs='*')
     args = parser.parse_args(argv)
@@ -23,15 +19,11 @@ def main(argv=None):  # type: (Optional[Sequence[str]]) -> int
             with open(filename, 'rb') as f:
                 ast.parse(f.read(), filename=filename)
         except SyntaxError:
-            print(
-                '{}: failed parsing with {} {}:'.format(
-                    filename,
-                    platform.python_implementation(),
-                    sys.version.partition(' ')[0],
-                ),
-            )
+            impl = platform.python_implementation()
+            version = sys.version.split()[0]
+            print(f'{filename}: failed parsing with {impl} {version}:')
             tb = '    ' + traceback.format_exc().replace('\n', '\n    ')
-            print('\n{}'.format(tb))
+            print(f'\n{tb}')
             retval = 1
     return retval