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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/cros_workon.py b/scripts/cros_workon.py
index 2aacbcb..833487d 100644
--- a/scripts/cros_workon.py
+++ b/scripts/cros_workon.py
@@ -18,88 +18,122 @@
 
 
 def GetParser():
-  """Get a CLI parser."""
-  parser = commandline.ArgumentParser(description=__doc__)
-  parser.add_argument('--board', default=cros_build_lib.GetDefaultBoard(),
-                      help='The board to set package keywords for.')
-  parser.add_argument('--host', default=False, action='store_true',
-                      help='Uses the host instead of board')
-  parser.add_argument('--command', default='git status', dest='iterate_command',
-                      help='The command to be run by forall.')
-  parser.add_argument('--workon_only', default=False, action='store_true',
-                      help='Apply to packages that have a workon ebuild only')
-  parser.add_argument('--all', default=False, action='store_true',
-                      help='Apply to all possible packages for the '
-                           'given command (overrides workon_only)')
+    """Get a CLI parser."""
+    parser = commandline.ArgumentParser(description=__doc__)
+    parser.add_argument(
+        "--board",
+        default=cros_build_lib.GetDefaultBoard(),
+        help="The board to set package keywords for.",
+    )
+    parser.add_argument(
+        "--host",
+        default=False,
+        action="store_true",
+        help="Uses the host instead of board",
+    )
+    parser.add_argument(
+        "--command",
+        default="git status",
+        dest="iterate_command",
+        help="The command to be run by forall.",
+    )
+    parser.add_argument(
+        "--workon_only",
+        default=False,
+        action="store_true",
+        help="Apply to packages that have a workon ebuild only",
+    )
+    parser.add_argument(
+        "--all",
+        default=False,
+        action="store_true",
+        help="Apply to all possible packages for the "
+        "given command (overrides workon_only)",
+    )
 
-  commands = [
-      ('start', 'Moves an ebuild to live (intended to support development)'),
-      ('stop', 'Moves an ebuild to stable (use last known good)'),
-      ('info', 'Print package name, repo name, and source directory.'),
-      ('list', 'List of live ebuilds (workon ebuilds if --all)'),
-      ('list-all', 'List all of the live ebuilds for all setup boards'),
-      ('iterate', 'For each ebuild, cd to the source dir and run a command'),
-  ]
-  command_parsers = parser.add_subparsers(dest='command', title='commands')
-  for command, description in commands:
-    sub_parser = command_parsers.add_parser(command, description=description,
-                                            help=description)
-    sub_parser.add_argument('packages', nargs='*',
-                            help='The packages to run command against.')
+    commands = [
+        ("start", "Moves an ebuild to live (intended to support development)"),
+        ("stop", "Moves an ebuild to stable (use last known good)"),
+        ("info", "Print package name, repo name, and source directory."),
+        ("list", "List of live ebuilds (workon ebuilds if --all)"),
+        ("list-all", "List all of the live ebuilds for all setup boards"),
+        ("iterate", "For each ebuild, cd to the source dir and run a command"),
+    ]
+    command_parsers = parser.add_subparsers(dest="command", title="commands")
+    for command, description in commands:
+        sub_parser = command_parsers.add_parser(
+            command, description=description, help=description
+        )
+        sub_parser.add_argument(
+            "packages", nargs="*", help="The packages to run command against."
+        )
 
-  return parser
+    return parser
 
 
 def main(argv):
-  parser = GetParser()
-  options = parser.parse_args(argv)
-  options.Freeze()
+    parser = GetParser()
+    options = parser.parse_args(argv)
+    options.Freeze()
 
-  if options.command == 'list-all':
-    board_to_packages = workon_helper.ListAllWorkedOnAtoms()
-    color = terminal.Color()
-    for board in sorted(board_to_packages):
-      print(color.Start(color.GREEN) + board + ':' + color.Stop())
-      for package in board_to_packages[board]:
-        print('    ' + package)
-      print('')
+    if options.command == "list-all":
+        board_to_packages = workon_helper.ListAllWorkedOnAtoms()
+        color = terminal.Color()
+        for board in sorted(board_to_packages):
+            print(color.Start(color.GREEN) + board + ":" + color.Stop())
+            for package in board_to_packages[board]:
+                print("    " + package)
+            print("")
+        return 0
+
+    # TODO(wiley): Assert that we're not running as root.
+    cros_build_lib.AssertInsideChroot()
+
+    if options.host:
+        friendly_name = "host"
+        sysroot = "/"
+    elif options.board:
+        friendly_name = options.board
+        sysroot = build_target_lib.get_default_sysroot_path(options.board)
+    else:
+        cros_build_lib.Die("You must specify either --host, --board")
+
+    helper = workon_helper.WorkonHelper(sysroot, friendly_name)
+    try:
+        if options.command == "start":
+            helper.StartWorkingOnPackages(
+                options.packages,
+                use_all=options.all,
+                use_workon_only=options.workon_only,
+            )
+        elif options.command == "stop":
+            helper.StopWorkingOnPackages(
+                options.packages,
+                use_all=options.all,
+                use_workon_only=options.workon_only,
+            )
+        elif options.command == "info":
+            triples = helper.GetPackageInfo(
+                options.packages,
+                use_all=options.all,
+                use_workon_only=options.workon_only,
+            )
+            for package, repos, paths in triples:
+                print(package, ",".join(repos), ",".join(paths))
+        elif options.command == "list":
+            packages = helper.ListAtoms(
+                use_all=options.all, use_workon_only=options.workon_only
+            )
+            if packages:
+                print("\n".join(packages))
+        elif options.command == "iterate":
+            helper.RunCommandInPackages(
+                options.packages,
+                options.iterate_command,
+                use_all=options.all,
+                use_workon_only=options.workon_only,
+            )
+    except workon_helper.WorkonError as e:
+        cros_build_lib.Die(e)
+
     return 0
-
-  # TODO(wiley): Assert that we're not running as root.
-  cros_build_lib.AssertInsideChroot()
-
-  if options.host:
-    friendly_name = 'host'
-    sysroot = '/'
-  elif options.board:
-    friendly_name = options.board
-    sysroot = build_target_lib.get_default_sysroot_path(options.board)
-  else:
-    cros_build_lib.Die('You must specify either --host, --board')
-
-  helper = workon_helper.WorkonHelper(sysroot, friendly_name)
-  try:
-    if options.command == 'start':
-      helper.StartWorkingOnPackages(options.packages, use_all=options.all,
-                                    use_workon_only=options.workon_only)
-    elif options.command == 'stop':
-      helper.StopWorkingOnPackages(options.packages, use_all=options.all,
-                                   use_workon_only=options.workon_only)
-    elif options.command == 'info':
-      triples = helper.GetPackageInfo(options.packages, use_all=options.all,
-                                      use_workon_only=options.workon_only)
-      for package, repos, paths in triples:
-        print(package, ','.join(repos), ','.join(paths))
-    elif options.command == 'list':
-      packages = helper.ListAtoms(
-          use_all=options.all, use_workon_only=options.workon_only)
-      if packages:
-        print('\n'.join(packages))
-    elif options.command == 'iterate':
-      helper.RunCommandInPackages(options.packages, options.iterate_command,
-                                  use_all=options.all,
-                                  use_workon_only=options.workon_only)
-  except workon_helper.WorkonError as e:
-    cros_build_lib.Die(e)
-
-  return 0