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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_generate_os_release.py b/scripts/cros_generate_os_release.py
index 6db6649..83a7b16 100644
--- a/scripts/cros_generate_os_release.py
+++ b/scripts/cros_generate_os_release.py
@@ -12,67 +12,72 @@
 
 
 def GenerateOsRelease(root, default_params=None):
-  """Adds contents of /etc/os-release.d into /etc/os-release
+    """Adds contents of /etc/os-release.d into /etc/os-release
 
-  Args:
-    root: path to the root directory where os-release should be genereated.
-    default_params: a dict of os-release parameters that should be added
-      if not already set.
-  """
-  os_release_path = os.path.join(root, 'etc', 'os-release')
-  os_released_path = os.path.join(root, 'etc', 'os-release.d')
+    Args:
+      root: path to the root directory where os-release should be genereated.
+      default_params: a dict of os-release parameters that should be added
+        if not already set.
+    """
+    os_release_path = os.path.join(root, "etc", "os-release")
+    os_released_path = os.path.join(root, "etc", "os-release.d")
 
-  mapping = {}
-  if os.path.exists(os_release_path):
-    content = osutils.ReadFile(os_release_path)
+    mapping = {}
+    if os.path.exists(os_release_path):
+        content = osutils.ReadFile(os_release_path)
 
-    for line in content.splitlines():
-      if line.startswith('#'):
-        continue
+        for line in content.splitlines():
+            if line.startswith("#"):
+                continue
 
-      key_value = line.split('=', 1)
-      if len(key_value) != 2:
-        cros_build_lib.Die('Malformed line in /etc/os-release')
+            key_value = line.split("=", 1)
+            if len(key_value) != 2:
+                cros_build_lib.Die("Malformed line in /etc/os-release")
 
-      mapping[key_value[0]] = key_value[1].strip()
+            mapping[key_value[0]] = key_value[1].strip()
 
-  if os.path.isdir(os_released_path):
-    for filepath in os.listdir(os_released_path):
-      key = os.path.basename(filepath)
-      if key in mapping:
-        cros_build_lib.Die('key %s defined in /etc/os-release.d but already '
-                           'defined in /etc/os-release.' % key)
-      mapping[key] = osutils.ReadFile(os.path.join(os_released_path,
-                                                   filepath)).strip('\n')
+    if os.path.isdir(os_released_path):
+        for filepath in os.listdir(os_released_path):
+            key = os.path.basename(filepath)
+            if key in mapping:
+                cros_build_lib.Die(
+                    "key %s defined in /etc/os-release.d but already "
+                    "defined in /etc/os-release." % key
+                )
+            mapping[key] = osutils.ReadFile(
+                os.path.join(os_released_path, filepath)
+            ).strip("\n")
 
-  if default_params:
-    for key, value in default_params.items():
-      mapping.setdefault(key, value)
+    if default_params:
+        for key, value in default_params.items():
+            mapping.setdefault(key, value)
 
-  osrelease_content = '\n'.join([k + '=' + mapping[k] for k in mapping])
-  osrelease_content += '\n'
-  osutils.WriteFile(os_release_path, osrelease_content)
+    osrelease_content = "\n".join([k + "=" + mapping[k] for k in mapping])
+    osrelease_content += "\n"
+    osutils.WriteFile(os_release_path, osrelease_content)
+
 
 def main(argv):
-  parser = commandline.ArgumentParser(description=__doc__)
-  parser.add_argument('--root', type='path', required=True,
-                      help='sysroot of the board')
-  parser.add_argument('--version', help='The image version string.')
-  parser.add_argument('--build_id', help='The image build ID string.')
-  options = parser.parse_args(argv)
-  options.Freeze()
+    parser = commandline.ArgumentParser(description=__doc__)
+    parser.add_argument(
+        "--root", type="path", required=True, help="sysroot of the board"
+    )
+    parser.add_argument("--version", help="The image version string.")
+    parser.add_argument("--build_id", help="The image build ID string.")
+    options = parser.parse_args(argv)
+    options.Freeze()
 
-  default_params = {
-      'NAME': 'Chromium OS',
-      'ID': 'chromiumos',
-      'HOME_URL': 'https://www.chromium.org/chromium-os',
-      'BUG_REPORT_URL': 'https://crbug.com/new',
-  }
+    default_params = {
+        "NAME": "Chromium OS",
+        "ID": "chromiumos",
+        "HOME_URL": "https://www.chromium.org/chromium-os",
+        "BUG_REPORT_URL": "https://crbug.com/new",
+    }
 
-  if options.version:
-    default_params['VERSION'] = options.version
-    default_params['VERSION_ID'] = options.version
-  if options.build_id:
-    default_params['BUILD_ID'] = options.build_id
+    if options.version:
+        default_params["VERSION"] = options.version
+        default_params["VERSION_ID"] = options.version
+    if options.build_id:
+        default_params["BUILD_ID"] = options.build_id
 
-  GenerateOsRelease(options.root, default_params)
+    GenerateOsRelease(options.root, default_params)