diff --git a/pre_commit/commands/run.py b/pre_commit/commands/run.py
index b1d2ee13..ab401798 100644
--- a/pre_commit/commands/run.py
+++ b/pre_commit/commands/run.py
@@ -11,7 +11,6 @@ import re
 import subprocess
 import time
 import unicodedata
-
 from typing import Any
 from typing import Collection
 from typing import MutableMapping
@@ -314,7 +313,7 @@ def _run_hooks(
         ))
     if args.summary_json_output_file:
         fn = pathlib.Path(args.summary_json_output_file).expanduser().resolve()
-        with open(fn,'w') as f:
+        with open(fn, 'w') as f:
             f.write(json.dumps(classifier.summary_json))
     return retval
 
diff --git a/pre_commit/main.py b/pre_commit/main.py
index 47b09902..d2b14326 100644
--- a/pre_commit/main.py
+++ b/pre_commit/main.py
@@ -156,7 +156,7 @@ def _add_run_options(parser: argparse.ArgumentParser) -> None:
     )
     parser.add_argument(
         '--summary-json-output-file',
-        help='Write summary information to a json file.'
+        help='Write summary information to a json file.',
     )