Formatting: Format all python code with black.

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BUG=b:233893248
TEST=CQ

Change-Id: I66591d7a738d241aed3290138c0f68065ab10a6d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/chromite/+/3879174
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Tested-by: Alex Klein <saklein@chromium.org>
diff --git a/scripts/lint_package.py b/scripts/lint_package.py
index 51e1e01..9fc5db3 100644
--- a/scripts/lint_package.py
+++ b/scripts/lint_package.py
@@ -23,172 +23,197 @@
 from chromite.utils import file_util
 
 
-def parse_packages(build_target: build_target_lib.BuildTarget,
-                   packages: List[str]) -> List[package_info.PackageInfo]:
-  """Parse packages and insert the category if none is given.
+def parse_packages(
+    build_target: build_target_lib.BuildTarget, packages: List[str]
+) -> List[package_info.PackageInfo]:
+    """Parse packages and insert the category if none is given.
 
-  Args:
-    build_target: build_target to find ebuild for
-    packages: user input package names to parse
+    Args:
+      build_target: build_target to find ebuild for
+      packages: user input package names to parse
 
-  Returns:
-    A list of parsed PackageInfo objects
-  """
-  package_infos: List[package_info.PackageInfo] = []
-  for package in packages:
-    parsed = package_info.parse(package)
-    if not parsed.category:
-      # If a category is not specified, we can get it from the ebuild path.
-      if build_target.is_host():
-        ebuild_path = portage_util.FindEbuildForPackage(
-            package, build_target.root)
-      else:
-        ebuild_path = portage_util.FindEbuildForBoardPackage(
-            package, build_target.name, build_target.root)
-      ebuild_data = portage_util.EBuild(ebuild_path)
-      parsed = package_info.parse(ebuild_data.package)
-    package_infos.append(parsed)
-  return package_infos
+    Returns:
+      A list of parsed PackageInfo objects
+    """
+    package_infos: List[package_info.PackageInfo] = []
+    for package in packages:
+        parsed = package_info.parse(package)
+        if not parsed.category:
+            # If a category is not specified, we can get it from the ebuild path.
+            if build_target.is_host():
+                ebuild_path = portage_util.FindEbuildForPackage(
+                    package, build_target.root
+                )
+            else:
+                ebuild_path = portage_util.FindEbuildForBoardPackage(
+                    package, build_target.name, build_target.root
+                )
+            ebuild_data = portage_util.EBuild(ebuild_path)
+            parsed = package_info.parse(ebuild_data.package)
+        package_infos.append(parsed)
+    return package_infos
 
 
 def format_lint(lint: toolchain.LinterFinding) -> Text:
-  """Formats a lint for human readable printing.
+    """Formats a lint for human readable printing.
 
-  Example output:
-  [ClangTidy] In 'path/to/file.c' on line 36:
-      Also in 'path/to/file.c' on line 40:
-      Also in 'path/to/file.c' on lines 50-53:
-    You did something bad, don't do it.
+    Example output:
+    [ClangTidy] In 'path/to/file.c' on line 36:
+        Also in 'path/to/file.c' on line 40:
+        Also in 'path/to/file.c' on lines 50-53:
+      You did something bad, don't do it.
 
-  Args:
-    lint: A linter finding from the toolchain service.
+    Args:
+      lint: A linter finding from the toolchain service.
 
-  Returns:
-    A correctly formatted string ready to be displayed to the user.
-  """
+    Returns:
+      A correctly formatted string ready to be displayed to the user.
+    """
 
-  color = terminal.Color(True)
-  lines = []
-  linter_prefix = color.Color(terminal.Color.YELLOW, f'[{lint.linter}]',
-                              background_color=terminal.Color.BLACK)
-  for loc in lint.locations:
-    if not lines:
-      location_prefix = f'\n{linter_prefix} In'
-    else:
-      location_prefix = '   and in'
-    if loc.line_start != loc.line_end:
-      lines.append(
-          f"{location_prefix} '{loc.filepath}' "
-          f'lines {loc.line_start}-{loc.line_end}:')
-    else:
-      lines.append(
-          f"{location_prefix} '{loc.filepath}' line {loc.line_start}:")
-  message_lines = lint.message.split('\n')
-  for line in message_lines:
-    lines.append(f'  {line}')
-  lines.append('')
-  return '\n'.join(lines)
+    color = terminal.Color(True)
+    lines = []
+    linter_prefix = color.Color(
+        terminal.Color.YELLOW,
+        f"[{lint.linter}]",
+        background_color=terminal.Color.BLACK,
+    )
+    for loc in lint.locations:
+        if not lines:
+            location_prefix = f"\n{linter_prefix} In"
+        else:
+            location_prefix = "   and in"
+        if loc.line_start != loc.line_end:
+            lines.append(
+                f"{location_prefix} '{loc.filepath}' "
+                f"lines {loc.line_start}-{loc.line_end}:"
+            )
+        else:
+            lines.append(
+                f"{location_prefix} '{loc.filepath}' line {loc.line_start}:"
+            )
+    message_lines = lint.message.split("\n")
+    for line in message_lines:
+        lines.append(f"  {line}")
+    lines.append("")
+    return "\n".join(lines)
 
 
 def get_arg_parser() -> commandline.ArgumentParser:
-  """Creates an argument parser for this script."""
-  default_board = cros_build_lib.GetDefaultBoard()
-  parser = commandline.ArgumentParser(description=__doc__)
+    """Creates an argument parser for this script."""
+    default_board = cros_build_lib.GetDefaultBoard()
+    parser = commandline.ArgumentParser(description=__doc__)
 
-  board_group = parser.add_mutually_exclusive_group(required=not default_board)
-  board_group.add_argument(
-      '-b',
-      '--board',
-      '--build-target',
-      dest='board',
-      default=default_board,
-      help='The board to emerge packages for')
-  board_group.add_argument(
-      '--host',
-      action='store_true',
-      help='emerge for host instead of board.')
-  board_group.add_argument(
-      '--fetch-only',
-      action='store_true',
-      help='Fetch lints from previous run without reseting or calling emerge.')
+    board_group = parser.add_mutually_exclusive_group(
+        required=not default_board
+    )
+    board_group.add_argument(
+        "-b",
+        "--board",
+        "--build-target",
+        dest="board",
+        default=default_board,
+        help="The board to emerge packages for",
+    )
+    board_group.add_argument(
+        "--host", action="store_true", help="emerge for host instead of board."
+    )
+    board_group.add_argument(
+        "--fetch-only",
+        action="store_true",
+        help="Fetch lints from previous run without reseting or calling emerge.",
+    )
 
-  parser.add_argument(
-      '--differential',
-      action='store_true',
-      help='only lint lines touched by the last commit')
-  parser.add_argument(
-      '-o',
-      '--output',
-      default=sys.stdout,
-      help='File to use instead of stdout.')
-  parser.add_argument(
-      '--json',
-      action='store_true',
-      help='Output lints in JSON format.')
-  parser.add_argument(
-      '--no-clippy',
-      dest='clippy',
-      action='store_false',
-      help='Disable cargo clippy linter.')
-  parser.add_argument(
-      '--no-tidy',
-      dest='tidy',
-      action='store_false',
-      help='Disable clang tidy linter.')
-  parser.add_argument(
-      '--no-golint',
-      dest='golint',
-      action='store_false',
-      help='Disable golint linter.')
-  parser.add_argument(
-      'packages', nargs='*', help='package(s) to emerge and retrieve lints for')
-  return parser
+    parser.add_argument(
+        "--differential",
+        action="store_true",
+        help="only lint lines touched by the last commit",
+    )
+    parser.add_argument(
+        "-o",
+        "--output",
+        default=sys.stdout,
+        help="File to use instead of stdout.",
+    )
+    parser.add_argument(
+        "--json", action="store_true", help="Output lints in JSON format."
+    )
+    parser.add_argument(
+        "--no-clippy",
+        dest="clippy",
+        action="store_false",
+        help="Disable cargo clippy linter.",
+    )
+    parser.add_argument(
+        "--no-tidy",
+        dest="tidy",
+        action="store_false",
+        help="Disable clang tidy linter.",
+    )
+    parser.add_argument(
+        "--no-golint",
+        dest="golint",
+        action="store_false",
+        help="Disable golint linter.",
+    )
+    parser.add_argument(
+        "packages",
+        nargs="*",
+        help="package(s) to emerge and retrieve lints for",
+    )
+    return parser
 
 
 def parse_args(argv: List[str]):
-  """Parses arguments in argv and returns the options."""
-  parser = get_arg_parser()
-  opts = parser.parse_args(argv)
-  opts.Freeze()
+    """Parses arguments in argv and returns the options."""
+    parser = get_arg_parser()
+    opts = parser.parse_args(argv)
+    opts.Freeze()
 
-  # A package must be specified unless we are in fetch-only mode
-  if not(opts.fetch_only or opts.packages):
-    parser.error('Emerge requires specified package(s).')
-  if opts.fetch_only and opts.packages:
-    parser.error('Cannot specify packages for fetch-only mode.')
+    # A package must be specified unless we are in fetch-only mode
+    if not (opts.fetch_only or opts.packages):
+        parser.error("Emerge requires specified package(s).")
+    if opts.fetch_only and opts.packages:
+        parser.error("Cannot specify packages for fetch-only mode.")
 
-  return opts
+    return opts
 
 
 def main(argv: List[str]) -> None:
-  cros_build_lib.AssertInsideChroot()
-  opts = parse_args(argv)
+    cros_build_lib.AssertInsideChroot()
+    opts = parse_args(argv)
 
-  if opts.host:
-    # BuildTarget interprets None as host target
-    build_target = build_target_lib.BuildTarget(None)
-  else:
-    build_target = build_target_lib.BuildTarget(opts.board)
-  packages = parse_packages(build_target, opts.packages)
-  package_atoms = [x.atom for x in packages]
-
-  with workon_helper.WorkonScope(build_target, package_atoms):
-    build_linter = toolchain.BuildLinter(packages, build_target.root,
-                                         opts.differential)
-    if opts.fetch_only:
-      lints = build_linter.fetch_findings(
-          use_clippy=opts.clippy, use_tidy=opts.tidy, use_golint=opts.golint)
+    if opts.host:
+        # BuildTarget interprets None as host target
+        build_target = build_target_lib.BuildTarget(None)
     else:
-      lints = build_linter.emerge_with_linting(
-          use_clippy=opts.clippy, use_tidy=opts.tidy, use_golint=opts.golint)
+        build_target = build_target_lib.BuildTarget(opts.board)
+    packages = parse_packages(build_target, opts.packages)
+    package_atoms = [x.atom for x in packages]
 
-  if opts.json:
-    formatted_output = json.dumps([lint._asdict() for lint in lints])
-  else:
-    formatted_output = '\n'.join(format_lint(lint) for lint in lints)
+    with workon_helper.WorkonScope(build_target, package_atoms):
+        build_linter = toolchain.BuildLinter(
+            packages, build_target.root, opts.differential
+        )
+        if opts.fetch_only:
+            lints = build_linter.fetch_findings(
+                use_clippy=opts.clippy,
+                use_tidy=opts.tidy,
+                use_golint=opts.golint,
+            )
+        else:
+            lints = build_linter.emerge_with_linting(
+                use_clippy=opts.clippy,
+                use_tidy=opts.tidy,
+                use_golint=opts.golint,
+            )
 
-  with file_util.Open(opts.output, 'w') as output_file:
-    output_file.write(formatted_output)
-    if not opts.json:
-      output_file.write(f'\nFound {len(lints)} lints.')
-    output_file.write('\n')
+    if opts.json:
+        formatted_output = json.dumps([lint._asdict() for lint in lints])
+    else:
+        formatted_output = "\n".join(format_lint(lint) for lint in lints)
+
+    with file_util.Open(opts.output, "w") as output_file:
+        output_file.write(formatted_output)
+        if not opts.json:
+            output_file.write(f"\nFound {len(lints)} lints.")
+        output_file.write("\n")