Check self format for the whole repo (#3750)

`black .` is changing things in gallery and scripts for me

.github/workflows/test.yml

@@ -103,4 +103,4 @@ jobs:
           python -m pip install -e ".[uvloop]"
 
       - name: Format ourselves
-        run: python -m black --check src/
+        run: python -m black --check .

gallery/gallery.py

@@ -243,11 +243,9 @@ def format_repos(repos: Tuple[Path, ...], options: Namespace) -> None:
 
 
 def main() -> None:
-    parser = ArgumentParser(
-        description="""Black Gallery is a script that
+    parser = ArgumentParser(description="""Black Gallery is a script that
     automates the process of applying different Black versions to a selected
-    PyPI package and seeing the results between versions."""
-    )
+    PyPI package and seeing the results between versions.""")
 
     group = parser.add_mutually_exclusive_group(required=True)
     group.add_argument("-p", "--pypi-package", help="PyPI package to download.")

scripts/make_width_table.py

@@ -49,8 +49,7 @@ def make_width_table() -> Iterable[Tuple[int, int, int]]:
 def main() -> None:
     table_path = join(dirname(__file__), "..", "src", "black", "_width_table.py")
     with open(table_path, "w") as f:
-        f.write(
-            f"""# Generated by {basename(__file__)}
+        f.write(f"""# Generated by {basename(__file__)}
 # wcwidth {wcwidth.__version__}
 # Unicode {wcwidth.list_versions()[-1]}
 import sys
@@ -62,8 +61,7 @@ def main() -> None:
     from typing import Final
 
 WIDTH_TABLE: Final[List[Tuple[int, int, int]]] = [
-"""
-        )
+""")
         for triple in make_width_table():
             f.write(f"    {triple!r},\n")
         f.write("]\n")