1 files changed, 7 insertions, 8 deletions

diff --git a/meta/lib/oe/rootfs.py b/meta/lib/oe/rootfs.py
index 95fd3ab7f1..528f50c0df 100644
--- a/meta/lib/oe/rootfs.py
+++ b/meta/lib/oe/rootfs.py
@@ -10,11 +10,10 @@ import subprocess
 import re
 
 
-class Rootfs(object):
+class Rootfs(object, metaclass=ABCMeta):
     """
     This is an abstract class. Do not instantiate this directly.
     """
-    __metaclass__ = ABCMeta
 
     def __init__(self, d):
         self.d = d
@@ -51,8 +50,8 @@ class Rootfs(object):
                 m = r.search(line)
                 if m:
                     bb.warn('[log_check] %s: found a warning message in the logfile (keyword \'%s\'):\n[log_check] %s'
-                                    % (self.d.getVar('PN', True), m.group(), line))
-
+                                    % (self.d.getVar('PN', True), m.group(), line))
+                                
     def _log_check_error(self):
         r = re.compile(self.log_check_regex)
         log_path = self.d.expand("${T}/log.do_rootfs")
@@ -77,7 +76,7 @@ class Rootfs(object):
                     found_error = 1
                     bb.warn('[log_check] In line: [%s]' % line)
                     bb.warn('[log_check] %s: found an error message in the logfile (keyword \'%s\'):\n[log_check] %s'
-                                    % (self.d.getVar('PN', True), m.group(), line))
+                                    % (self.d.getVar('PN', True), m.group(), line))
 
                 if found_error >= 1 and found_error <= 5:
                     message += line + '\n'
@@ -485,7 +484,7 @@ class RpmRootfs(Rootfs):
                     continue
                 # sh -x may emit code which isn't actually executed
                 if line.startswith('+'):
-                    continue
+                    continue
 
                 m = r.search(line)
                 if m:
@@ -565,7 +564,7 @@ class DpkgOpkgRootfs(Rootfs):
                     pkg_depends = m_depends.group(1)
 
         # remove package dependencies not in postinsts
-        pkg_names = pkgs.keys()
+        pkg_names = list(pkgs.keys())
         for pkg_name in pkg_names:
             deps = pkgs[pkg_name][:]
 
@@ -598,7 +597,7 @@ class DpkgOpkgRootfs(Rootfs):
             pkgs = self._get_pkgs_postinsts(status_file)
         if pkgs:
             root = "__packagegroup_postinst__"
-            pkgs[root] = pkgs.keys()
+            pkgs[root] = list(pkgs.keys())
             _dep_resolve(pkgs, root, pkg_list, [])
             pkg_list.remove(root)